Home / 15,160.31-20,921.27-9,864.13

Finding the Fourth Proportional to 15,160.31, 20,921.27 and 9,864.13

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Solution

The fourth proportional to 15,160.31, 20,921.27 and 9,864.13 is: 13,612.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.31 : 20,921.27 = 9,864.13 : x
  2. Step 2: Convert to fraction form
    15,160.31/20,921.27 = 9,864.13/x
  3. Step 3: Cross multiply
    15,160.31x = 20,921.27 × 9,864.13
  4. Step 4: Simplify right side
    15,160.31x = 206,370,127.05
  5. Step 5: Solve for x
    x = 206,370,127.05/15,160.31
  6. Step 6: Final answer
    x = 13,612.53

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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.