Home / 15,358.55-21,175.16-10,318.86

Finding the Fourth Proportional to 15,358.55, 21,175.16 and 10,318.86

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Solution

The fourth proportional to 15,358.55, 21,175.16 and 10,318.86 is: 14,226.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.55 : 21,175.16 = 10,318.86 : x
  2. Step 2: Convert to fraction form
    15,358.55/21,175.16 = 10,318.86/x
  3. Step 3: Cross multiply
    15,358.55x = 21,175.16 × 10,318.86
  4. Step 4: Simplify right side
    15,358.55x = 218,503,459.92
  5. Step 5: Solve for x
    x = 218,503,459.92/15,358.55
  6. Step 6: Final answer
    x = 14,226.83

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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.