Home / 10,812.61-16,217.71-2,915.92

Finding the Fourth Proportional to 10,812.61, 16,217.71 and 2,915.92

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Solution

The fourth proportional to 10,812.61, 16,217.71 and 2,915.92 is: 4,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.61 : 16,217.71 = 2,915.92 : x
  2. Step 2: Convert to fraction form
    10,812.61/16,217.71 = 2,915.92/x
  3. Step 3: Cross multiply
    10,812.61x = 16,217.71 × 2,915.92
  4. Step 4: Simplify right side
    10,812.61x = 47,289,544.94
  5. Step 5: Solve for x
    x = 47,289,544.94/10,812.61
  6. Step 6: Final answer
    x = 4,373.56

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Double scale
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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.