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Finding the Fourth Proportional to 28,590.88, 42,900.94 and 13,614.92

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Solution

The fourth proportional to 28,590.88, 42,900.94 and 13,614.92 is: 20,429.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.88 : 42,900.94 = 13,614.92 : x
  2. Step 2: Convert to fraction form
    28,590.88/42,900.94 = 13,614.92/x
  3. Step 3: Cross multiply
    28,590.88x = 42,900.94 × 13,614.92
  4. Step 4: Simplify right side
    28,590.88x = 584,092,866.02
  5. Step 5: Solve for x
    x = 584,092,866.02/28,590.88
  6. Step 6: Final answer
    x = 20,429.34

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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.