Home / 10,220.88-15,332.32-3,981.42

Finding the Fourth Proportional to 10,220.88, 15,332.32 and 3,981.42

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Solution

The fourth proportional to 10,220.88, 15,332.32 and 3,981.42 is: 5,972.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.88 : 15,332.32 = 3,981.42 : x
  2. Step 2: Convert to fraction form
    10,220.88/15,332.32 = 3,981.42/x
  3. Step 3: Cross multiply
    10,220.88x = 15,332.32 × 3,981.42
  4. Step 4: Simplify right side
    10,220.88x = 61,044,405.49
  5. Step 5: Solve for x
    x = 61,044,405.49/10,220.88
  6. Step 6: Final answer
    x = 5,972.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.