Home / 15,112.10-20,840.75-9,445.04

Finding the Fourth Proportional to 15,112.10, 20,840.75 and 9,445.04

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Solution

The fourth proportional to 15,112.10, 20,840.75 and 9,445.04 is: 13,025.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.10 : 20,840.75 = 9,445.04 : x
  2. Step 2: Convert to fraction form
    15,112.10/20,840.75 = 9,445.04/x
  3. Step 3: Cross multiply
    15,112.10x = 20,840.75 × 9,445.04
  4. Step 4: Simplify right side
    15,112.10x = 196,841,679.52
  5. Step 5: Solve for x
    x = 196,841,679.52/15,112.10
  6. Step 6: Final answer
    x = 13,025.43

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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.