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Finding the Fourth Proportional to 15,041.70, 20,757.42 and 8,417.70

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Solution

The fourth proportional to 15,041.70, 20,757.42 and 8,417.70 is: 11,616.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,041.70 : 20,757.42 = 8,417.70 : x
  2. Step 2: Convert to fraction form
    15,041.70/20,757.42 = 8,417.70/x
  3. Step 3: Cross multiply
    15,041.70x = 20,757.42 × 8,417.70
  4. Step 4: Simplify right side
    15,041.70x = 174,729,734.33
  5. Step 5: Solve for x
    x = 174,729,734.33/15,041.70
  6. Step 6: Final answer
    x = 11,616.36

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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.