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Finding the Fourth Proportional to 28,048.20, 42,061.50 and 9,580.20

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Solution

The fourth proportional to 28,048.20, 42,061.50 and 9,580.20 is: 14,366.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,048.20 : 42,061.50 = 9,580.20 : x
  2. Step 2: Convert to fraction form
    28,048.20/42,061.50 = 9,580.20/x
  3. Step 3: Cross multiply
    28,048.20x = 42,061.50 × 9,580.20
  4. Step 4: Simplify right side
    28,048.20x = 402,957,582.30
  5. Step 5: Solve for x
    x = 402,957,582.30/28,048.20
  6. Step 6: Final answer
    x = 14,366.61

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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.