Home / 16,121.76-22,248.60-9,411.68

Finding the Fourth Proportional to 16,121.76, 22,248.60 and 9,411.68

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Solution

The fourth proportional to 16,121.76, 22,248.60 and 9,411.68 is: 12,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,121.76 : 22,248.60 = 9,411.68 : x
  2. Step 2: Convert to fraction form
    16,121.76/22,248.60 = 9,411.68/x
  3. Step 3: Cross multiply
    16,121.76x = 22,248.60 × 9,411.68
  4. Step 4: Simplify right side
    16,121.76x = 209,396,703.65
  5. Step 5: Solve for x
    x = 209,396,703.65/16,121.76
  6. Step 6: Final answer
    x = 12,988.45

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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.