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Finding the Fourth Proportional to 28,315.20, 42,476.88 and 9,596.88

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Solution

The fourth proportional to 28,315.20, 42,476.88 and 9,596.88 is: 14,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.20 : 42,476.88 = 9,596.88 : x
  2. Step 2: Convert to fraction form
    28,315.20/42,476.88 = 9,596.88/x
  3. Step 3: Cross multiply
    28,315.20x = 42,476.88 × 9,596.88
  4. Step 4: Simplify right side
    28,315.20x = 407,645,520.13
  5. Step 5: Solve for x
    x = 407,645,520.13/28,315.20
  6. Step 6: Final answer
    x = 14,396.70

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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.