Home / 15,410.85-21,247.17-12,575.34

Finding the Fourth Proportional to 15,410.85, 21,247.17 and 12,575.34

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Solution

The fourth proportional to 15,410.85, 21,247.17 and 12,575.34 is: 17,337.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,410.85 : 21,247.17 = 12,575.34 : x
  2. Step 2: Convert to fraction form
    15,410.85/21,247.17 = 12,575.34/x
  3. Step 3: Cross multiply
    15,410.85x = 21,247.17 × 12,575.34
  4. Step 4: Simplify right side
    15,410.85x = 267,190,386.79
  5. Step 5: Solve for x
    x = 267,190,386.79/15,410.85
  6. Step 6: Final answer
    x = 17,337.81

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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.