Home / 28,915.92-39,906-16,340.76

Finding the Fourth Proportional to 28,915.92, 39,906 and 16,340.76

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Solution

The fourth proportional to 28,915.92, 39,906 and 16,340.76 is: 22,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.92 : 39,906 = 16,340.76 : x
  2. Step 2: Convert to fraction form
    28,915.92/39,906 = 16,340.76/x
  3. Step 3: Cross multiply
    28,915.92x = 39,906 × 16,340.76
  4. Step 4: Simplify right side
    28,915.92x = 652,094,368.56
  5. Step 5: Solve for x
    x = 652,094,368.56/28,915.92
  6. Step 6: Final answer
    x = 22,551.40

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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.