Home / 13,134.32-18,125.08-7,166.16

Finding the Fourth Proportional to 13,134.32, 18,125.08 and 7,166.16

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Solution

The fourth proportional to 13,134.32, 18,125.08 and 7,166.16 is: 9,889.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.32 : 18,125.08 = 7,166.16 : x
  2. Step 2: Convert to fraction form
    13,134.32/18,125.08 = 7,166.16/x
  3. Step 3: Cross multiply
    13,134.32x = 18,125.08 × 7,166.16
  4. Step 4: Simplify right side
    13,134.32x = 129,887,223.29
  5. Step 5: Solve for x
    x = 129,887,223.29/13,134.32
  6. Step 6: Final answer
    x = 9,889.15

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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.