Home / 15,451.42-21,323.10-8,377.86

Finding the Fourth Proportional to 15,451.42, 21,323.10 and 8,377.86

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Solution

The fourth proportional to 15,451.42, 21,323.10 and 8,377.86 is: 11,561.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.42 : 21,323.10 = 8,377.86 : x
  2. Step 2: Convert to fraction form
    15,451.42/21,323.10 = 8,377.86/x
  3. Step 3: Cross multiply
    15,451.42x = 21,323.10 × 8,377.86
  4. Step 4: Simplify right side
    15,451.42x = 178,641,946.57
  5. Step 5: Solve for x
    x = 178,641,946.57/15,451.42
  6. Step 6: Final answer
    x = 11,561.52

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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.