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Finding the Fourth Proportional to 24,988.80, 34,478.86 and 14,920.50

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Solution

The fourth proportional to 24,988.80, 34,478.86 and 14,920.50 is: 20,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,988.80 : 34,478.86 = 14,920.50 : x
  2. Step 2: Convert to fraction form
    24,988.80/34,478.86 = 14,920.50/x
  3. Step 3: Cross multiply
    24,988.80x = 34,478.86 × 14,920.50
  4. Step 4: Simplify right side
    24,988.80x = 514,441,830.63
  5. Step 5: Solve for x
    x = 514,441,830.63/24,988.80
  6. Step 6: Final answer
    x = 20,586.90

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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.