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Finding the Fourth Proportional to 15,125.00, 20,872.40 and 8,410.23

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Solution

The fourth proportional to 15,125.00, 20,872.40 and 8,410.23 is: 11,606.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.00 : 20,872.40 = 8,410.23 : x
  2. Step 2: Convert to fraction form
    15,125.00/20,872.40 = 8,410.23/x
  3. Step 3: Cross multiply
    15,125.00x = 20,872.40 × 8,410.23
  4. Step 4: Simplify right side
    15,125.00x = 175,541,642.60
  5. Step 5: Solve for x
    x = 175,541,642.60/15,125.00
  6. Step 6: Final answer
    x = 11,606.06

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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.