Home / 13,086.40-18,060.32-7,497.28

Finding the Fourth Proportional to 13,086.40, 18,060.32 and 7,497.28

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Solution

The fourth proportional to 13,086.40, 18,060.32 and 7,497.28 is: 10,346.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.40 : 18,060.32 = 7,497.28 : x
  2. Step 2: Convert to fraction form
    13,086.40/18,060.32 = 7,497.28/x
  3. Step 3: Cross multiply
    13,086.40x = 18,060.32 × 7,497.28
  4. Step 4: Simplify right side
    13,086.40x = 135,403,275.93
  5. Step 5: Solve for x
    x = 135,403,275.93/13,086.40
  6. Step 6: Final answer
    x = 10,346.87

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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.