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Finding the Fourth Proportional to 28,989.64, 40,024.89 and 22,263.20

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Solution

The fourth proportional to 28,989.64, 40,024.89 and 22,263.20 is: 30,737.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.64 : 40,024.89 = 22,263.20 : x
  2. Step 2: Convert to fraction form
    28,989.64/40,024.89 = 22,263.20/x
  3. Step 3: Cross multiply
    28,989.64x = 40,024.89 × 22,263.20
  4. Step 4: Simplify right side
    28,989.64x = 891,081,930.92
  5. Step 5: Solve for x
    x = 891,081,930.92/28,989.64
  6. Step 6: Final answer
    x = 30,737.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.