Home / 13,319.13-19,959.65-9,781.39

Finding the Fourth Proportional to 13,319.13, 19,959.65 and 9,781.39

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Solution

The fourth proportional to 13,319.13, 19,959.65 and 9,781.39 is: 14,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.13 : 19,959.65 = 9,781.39 : x
  2. Step 2: Convert to fraction form
    13,319.13/19,959.65 = 9,781.39/x
  3. Step 3: Cross multiply
    13,319.13x = 19,959.65 × 9,781.39
  4. Step 4: Simplify right side
    13,319.13x = 195,233,120.91
  5. Step 5: Solve for x
    x = 195,233,120.91/13,319.13
  6. Step 6: Final answer
    x = 14,658.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.