Home / 15,414.42-21,270.69-8,701.68

Finding the Fourth Proportional to 15,414.42, 21,270.69 and 8,701.68

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Solution

The fourth proportional to 15,414.42, 21,270.69 and 8,701.68 is: 12,007.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.42 : 21,270.69 = 8,701.68 : x
  2. Step 2: Convert to fraction form
    15,414.42/21,270.69 = 8,701.68/x
  3. Step 3: Cross multiply
    15,414.42x = 21,270.69 × 8,701.68
  4. Step 4: Simplify right side
    15,414.42x = 185,090,737.76
  5. Step 5: Solve for x
    x = 185,090,737.76/15,414.42
  6. Step 6: Final answer
    x = 12,007.64

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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.