Home / 10,214.40-15,320.10-3,192.78

Finding the Fourth Proportional to 10,214.40, 15,320.10 and 3,192.78

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Solution

The fourth proportional to 10,214.40, 15,320.10 and 3,192.78 is: 4,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,214.40 : 15,320.10 = 3,192.78 : x
  2. Step 2: Convert to fraction form
    10,214.40/15,320.10 = 3,192.78/x
  3. Step 3: Cross multiply
    10,214.40x = 15,320.10 × 3,192.78
  4. Step 4: Simplify right side
    10,214.40x = 48,913,708.88
  5. Step 5: Solve for x
    x = 48,913,708.88/10,214.40
  6. Step 6: Final answer
    x = 4,788.70

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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.