Home / 28,890.92-39,867.72-16,956.40

Finding the Fourth Proportional to 28,890.92, 39,867.72 and 16,956.40

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Solution

The fourth proportional to 28,890.92, 39,867.72 and 16,956.40 is: 23,398.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.92 : 39,867.72 = 16,956.40 : x
  2. Step 2: Convert to fraction form
    28,890.92/39,867.72 = 16,956.40/x
  3. Step 3: Cross multiply
    28,890.92x = 39,867.72 × 16,956.40
  4. Step 4: Simplify right side
    28,890.92x = 676,013,007.41
  5. Step 5: Solve for x
    x = 676,013,007.41/28,890.92
  6. Step 6: Final answer
    x = 23,398.81

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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.