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Finding the Fourth Proportional to 28,541.55, 42,820.92 and 8,551.71

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Solution

The fourth proportional to 28,541.55, 42,820.92 and 8,551.71 is: 12,830.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,541.55 : 42,820.92 = 8,551.71 : x
  2. Step 2: Convert to fraction form
    28,541.55/42,820.92 = 8,551.71/x
  3. Step 3: Cross multiply
    28,541.55x = 42,820.92 × 8,551.71
  4. Step 4: Simplify right side
    28,541.55x = 366,192,089.77
  5. Step 5: Solve for x
    x = 366,192,089.77/28,541.55
  6. Step 6: Final answer
    x = 12,830.14

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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.