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Finding the Fourth Proportional to 28,179.77, 42,264.92 and 9,457.70

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Solution

The fourth proportional to 28,179.77, 42,264.92 and 9,457.70 is: 14,184.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.77 : 42,264.92 = 9,457.70 : x
  2. Step 2: Convert to fraction form
    28,179.77/42,264.92 = 9,457.70/x
  3. Step 3: Cross multiply
    28,179.77x = 42,264.92 × 9,457.70
  4. Step 4: Simplify right side
    28,179.77x = 399,728,746.20
  5. Step 5: Solve for x
    x = 399,728,746.20/28,179.77
  6. Step 6: Final answer
    x = 14,184.96

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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.