Home / 13,134.12-18,125.15-7,165.92

Finding the Fourth Proportional to 13,134.12, 18,125.15 and 7,165.92

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Solution

The fourth proportional to 13,134.12, 18,125.15 and 7,165.92 is: 9,889.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.12 : 18,125.15 = 7,165.92 : x
  2. Step 2: Convert to fraction form
    13,134.12/18,125.15 = 7,165.92/x
  3. Step 3: Cross multiply
    13,134.12x = 18,125.15 × 7,165.92
  4. Step 4: Simplify right side
    13,134.12x = 129,883,420.20
  5. Step 5: Solve for x
    x = 129,883,420.20/13,134.12
  6. Step 6: Final answer
    x = 9,889.01

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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.