Home / 15,459.43-23,186.45-7,138.74

Finding the Fourth Proportional to 15,459.43, 23,186.45 and 7,138.74

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Solution

The fourth proportional to 15,459.43, 23,186.45 and 7,138.74 is: 10,706.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.43 : 23,186.45 = 7,138.74 : x
  2. Step 2: Convert to fraction form
    15,459.43/23,186.45 = 7,138.74/x
  3. Step 3: Cross multiply
    15,459.43x = 23,186.45 × 7,138.74
  4. Step 4: Simplify right side
    15,459.43x = 165,522,055.92
  5. Step 5: Solve for x
    x = 165,522,055.92/15,459.43
  6. Step 6: Final answer
    x = 10,706.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.