Home / 21,191.36-31,776.68-6,397.52

Finding the Fourth Proportional to 21,191.36, 31,776.68 and 6,397.52

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Solution

The fourth proportional to 21,191.36, 31,776.68 and 6,397.52 is: 9,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.36 : 31,776.68 = 6,397.52 : x
  2. Step 2: Convert to fraction form
    21,191.36/31,776.68 = 6,397.52/x
  3. Step 3: Cross multiply
    21,191.36x = 31,776.68 × 6,397.52
  4. Step 4: Simplify right side
    21,191.36x = 203,291,945.83
  5. Step 5: Solve for x
    x = 203,291,945.83/21,191.36
  6. Step 6: Final answer
    x = 9,593.15

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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.