Home / 13,084.76-18,056.58-7,420.05

Finding the Fourth Proportional to 13,084.76, 18,056.58 and 7,420.05

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Solution

The fourth proportional to 13,084.76, 18,056.58 and 7,420.05 is: 10,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.76 : 18,056.58 = 7,420.05 : x
  2. Step 2: Convert to fraction form
    13,084.76/18,056.58 = 7,420.05/x
  3. Step 3: Cross multiply
    13,084.76x = 18,056.58 × 7,420.05
  4. Step 4: Simplify right side
    13,084.76x = 133,980,726.43
  5. Step 5: Solve for x
    x = 133,980,726.43/13,084.76
  6. Step 6: Final answer
    x = 10,239.45

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Half scale
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Double scale
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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.