Home / 12,962.43-19,438.79-10,221.39

Finding the Fourth Proportional to 12,962.43, 19,438.79 and 10,221.39

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Solution

The fourth proportional to 12,962.43, 19,438.79 and 10,221.39 is: 15,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,962.43 : 19,438.79 = 10,221.39 : x
  2. Step 2: Convert to fraction form
    12,962.43/19,438.79 = 10,221.39/x
  3. Step 3: Cross multiply
    12,962.43x = 19,438.79 × 10,221.39
  4. Step 4: Simplify right side
    12,962.43x = 198,691,402.61
  5. Step 5: Solve for x
    x = 198,691,402.61/12,962.43
  6. Step 6: Final answer
    x = 15,328.25

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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.