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Finding the Fourth Proportional to 28,594.71, 42,897.78 and 9,875.43

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Solution

The fourth proportional to 28,594.71, 42,897.78 and 9,875.43 is: 14,815.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,594.71 : 42,897.78 = 9,875.43 : x
  2. Step 2: Convert to fraction form
    28,594.71/42,897.78 = 9,875.43/x
  3. Step 3: Cross multiply
    28,594.71x = 42,897.78 × 9,875.43
  4. Step 4: Simplify right side
    28,594.71x = 423,633,833.75
  5. Step 5: Solve for x
    x = 423,633,833.75/28,594.71
  6. Step 6: Final answer
    x = 14,815.11

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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.