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Finding the Fourth Proportional to 28,428.42, 42,612.94 and 9,701.93

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Solution

The fourth proportional to 28,428.42, 42,612.94 and 9,701.93 is: 14,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.42 : 42,612.94 = 9,701.93 : x
  2. Step 2: Convert to fraction form
    28,428.42/42,612.94 = 9,701.93/x
  3. Step 3: Cross multiply
    28,428.42x = 42,612.94 × 9,701.93
  4. Step 4: Simplify right side
    28,428.42x = 413,427,585.36
  5. Step 5: Solve for x
    x = 413,427,585.36/28,428.42
  6. Step 6: Final answer
    x = 14,542.76

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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.