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Finding the Fourth Proportional to 28,475.96, 42,718.79 and 8,754.08

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Solution

The fourth proportional to 28,475.96, 42,718.79 and 8,754.08 is: 13,132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.96 : 42,718.79 = 8,754.08 : x
  2. Step 2: Convert to fraction form
    28,475.96/42,718.79 = 8,754.08/x
  3. Step 3: Cross multiply
    28,475.96x = 42,718.79 × 8,754.08
  4. Step 4: Simplify right side
    28,475.96x = 373,963,513.45
  5. Step 5: Solve for x
    x = 373,963,513.45/28,475.96
  6. Step 6: Final answer
    x = 13,132.61

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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.