Home / 15,451.49-21,323.03-8,377.89

Finding the Fourth Proportional to 15,451.49, 21,323.03 and 8,377.89

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Solution

The fourth proportional to 15,451.49, 21,323.03 and 8,377.89 is: 11,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.49 : 21,323.03 = 8,377.89 : x
  2. Step 2: Convert to fraction form
    15,451.49/21,323.03 = 8,377.89/x
  3. Step 3: Cross multiply
    15,451.49x = 21,323.03 × 8,377.89
  4. Step 4: Simplify right side
    15,451.49x = 178,641,957.92
  5. Step 5: Solve for x
    x = 178,641,957.92/15,451.49
  6. Step 6: Final answer
    x = 11,561.48

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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.