Home / 15,731.36-21,710.17-9,018.10

Finding the Fourth Proportional to 15,731.36, 21,710.17 and 9,018.10

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Solution

The fourth proportional to 15,731.36, 21,710.17 and 9,018.10 is: 12,445.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.36 : 21,710.17 = 9,018.10 : x
  2. Step 2: Convert to fraction form
    15,731.36/21,710.17 = 9,018.10/x
  3. Step 3: Cross multiply
    15,731.36x = 21,710.17 × 9,018.10
  4. Step 4: Simplify right side
    15,731.36x = 195,784,484.08
  5. Step 5: Solve for x
    x = 195,784,484.08/15,731.36
  6. Step 6: Final answer
    x = 12,445.49

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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.