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Finding the Fourth Proportional to 18,737.79, 28,110.12 and 6,256.63

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Solution

The fourth proportional to 18,737.79, 28,110.12 and 6,256.63 is: 9,386.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.79 : 28,110.12 = 6,256.63 : x
  2. Step 2: Convert to fraction form
    18,737.79/28,110.12 = 6,256.63/x
  3. Step 3: Cross multiply
    18,737.79x = 28,110.12 × 6,256.63
  4. Step 4: Simplify right side
    18,737.79x = 175,874,620.10
  5. Step 5: Solve for x
    x = 175,874,620.10/18,737.79
  6. Step 6: Final answer
    x = 9,386.09

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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.