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Finding the Fourth Proportional to 28,894.47, 43,355.45 and 20,023.45

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Solution

The fourth proportional to 28,894.47, 43,355.45 and 20,023.45 is: 30,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.47 : 43,355.45 = 20,023.45 : x
  2. Step 2: Convert to fraction form
    28,894.47/43,355.45 = 20,023.45/x
  3. Step 3: Cross multiply
    28,894.47x = 43,355.45 × 20,023.45
  4. Step 4: Simplify right side
    28,894.47x = 868,125,870.85
  5. Step 5: Solve for x
    x = 868,125,870.85/28,894.47
  6. Step 6: Final answer
    x = 30,044.70

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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.