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Finding the Fourth Proportional to 15,410.70, 21,266.70 and 8,337.12

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Solution

The fourth proportional to 15,410.70, 21,266.70 and 8,337.12 is: 11,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,410.70 : 21,266.70 = 8,337.12 : x
  2. Step 2: Convert to fraction form
    15,410.70/21,266.70 = 8,337.12/x
  3. Step 3: Cross multiply
    15,410.70x = 21,266.70 × 8,337.12
  4. Step 4: Simplify right side
    15,410.70x = 177,303,029.90
  5. Step 5: Solve for x
    x = 177,303,029.90/15,410.70
  6. Step 6: Final answer
    x = 11,505.19

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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.