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Finding the Fourth Proportional to 26,885.70, 40,328.55 and 15,221.70

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Solution

The fourth proportional to 26,885.70, 40,328.55 and 15,221.70 is: 22,832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,885.70 : 40,328.55 = 15,221.70 : x
  2. Step 2: Convert to fraction form
    26,885.70/40,328.55 = 15,221.70/x
  3. Step 3: Cross multiply
    26,885.70x = 40,328.55 × 15,221.70
  4. Step 4: Simplify right side
    26,885.70x = 613,869,089.54
  5. Step 5: Solve for x
    x = 613,869,089.54/26,885.70
  6. Step 6: Final answer
    x = 22,832.55

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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.