Home / 21,430.68-32,151.15-8,943.76

Finding the Fourth Proportional to 21,430.68, 32,151.15 and 8,943.76

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Solution

The fourth proportional to 21,430.68, 32,151.15 and 8,943.76 is: 13,417.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.68 : 32,151.15 = 8,943.76 : x
  2. Step 2: Convert to fraction form
    21,430.68/32,151.15 = 8,943.76/x
  3. Step 3: Cross multiply
    21,430.68x = 32,151.15 × 8,943.76
  4. Step 4: Simplify right side
    21,430.68x = 287,552,169.32
  5. Step 5: Solve for x
    x = 287,552,169.32/21,430.68
  6. Step 6: Final answer
    x = 13,417.78

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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.