Home / 16,985.10-23,439.65-9,431.90

Finding the Fourth Proportional to 16,985.10, 23,439.65 and 9,431.90

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Solution

The fourth proportional to 16,985.10, 23,439.65 and 9,431.90 is: 13,016.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.10 : 23,439.65 = 9,431.90 : x
  2. Step 2: Convert to fraction form
    16,985.10/23,439.65 = 9,431.90/x
  3. Step 3: Cross multiply
    16,985.10x = 23,439.65 × 9,431.90
  4. Step 4: Simplify right side
    16,985.10x = 221,080,517.01
  5. Step 5: Solve for x
    x = 221,080,517.01/16,985.10
  6. Step 6: Final answer
    x = 13,016.14

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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.