Home / 13,134.18-18,125.30-7,165.89

Finding the Fourth Proportional to 13,134.18, 18,125.30 and 7,165.89

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Solution

The fourth proportional to 13,134.18, 18,125.30 and 7,165.89 is: 9,889.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.18 : 18,125.30 = 7,165.89 : x
  2. Step 2: Convert to fraction form
    13,134.18/18,125.30 = 7,165.89/x
  3. Step 3: Cross multiply
    13,134.18x = 18,125.30 × 7,165.89
  4. Step 4: Simplify right side
    13,134.18x = 129,883,906.02
  5. Step 5: Solve for x
    x = 129,883,906.02/13,134.18
  6. Step 6: Final answer
    x = 9,889.00

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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.