Home / 16,891.20-23,312.17-9,720.96

Finding the Fourth Proportional to 16,891.20, 23,312.17 and 9,720.96

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Solution

The fourth proportional to 16,891.20, 23,312.17 and 9,720.96 is: 13,416.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,891.20 : 23,312.17 = 9,720.96 : x
  2. Step 2: Convert to fraction form
    16,891.20/23,312.17 = 9,720.96/x
  3. Step 3: Cross multiply
    16,891.20x = 23,312.17 × 9,720.96
  4. Step 4: Simplify right side
    16,891.20x = 226,616,672.08
  5. Step 5: Solve for x
    x = 226,616,672.08/16,891.20
  6. Step 6: Final answer
    x = 13,416.26

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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.