Home / 13,084.19-18,056.18-7,419.05

Finding the Fourth Proportional to 13,084.19, 18,056.18 and 7,419.05

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Solution

The fourth proportional to 13,084.19, 18,056.18 and 7,419.05 is: 10,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.19 : 18,056.18 = 7,419.05 : x
  2. Step 2: Convert to fraction form
    13,084.19/18,056.18 = 7,419.05/x
  3. Step 3: Cross multiply
    13,084.19x = 18,056.18 × 7,419.05
  4. Step 4: Simplify right side
    13,084.19x = 133,959,702.23
  5. Step 5: Solve for x
    x = 133,959,702.23/13,084.19
  6. Step 6: Final answer
    x = 10,238.29

Related Problems

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Half scale
Find fourth proportional to 26,168.38, 36,112.36 and 14,838.10
Double scale
Find fourth proportional to 13,085.19, 18,057.56 and 7,420.05
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.