Home / 10,217.70-15,330.33-4,378.86

Finding the Fourth Proportional to 10,217.70, 15,330.33 and 4,378.86

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Solution

The fourth proportional to 10,217.70, 15,330.33 and 4,378.86 is: 6,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,217.70 : 15,330.33 = 4,378.86 : x
  2. Step 2: Convert to fraction form
    10,217.70/15,330.33 = 4,378.86/x
  3. Step 3: Cross multiply
    10,217.70x = 15,330.33 × 4,378.86
  4. Step 4: Simplify right side
    10,217.70x = 67,129,368.82
  5. Step 5: Solve for x
    x = 67,129,368.82/10,217.70
  6. Step 6: Final answer
    x = 6,569.91

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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.