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Finding the Fourth Proportional to 21,449.95, 32,152.47 and 8,977.12

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Solution

The fourth proportional to 21,449.95, 32,152.47 and 8,977.12 is: 13,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.95 : 32,152.47 = 8,977.12 : x
  2. Step 2: Convert to fraction form
    21,449.95/32,152.47 = 8,977.12/x
  3. Step 3: Cross multiply
    21,449.95x = 32,152.47 × 8,977.12
  4. Step 4: Simplify right side
    21,449.95x = 288,636,581.49
  5. Step 5: Solve for x
    x = 288,636,581.49/21,449.95
  6. Step 6: Final answer
    x = 13,456.28

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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.