Home / 10,236.71-15,348.76-3,989.45

Finding the Fourth Proportional to 10,236.71, 15,348.76 and 3,989.45

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Solution

The fourth proportional to 10,236.71, 15,348.76 and 3,989.45 is: 5,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,236.71 : 15,348.76 = 3,989.45 : x
  2. Step 2: Convert to fraction form
    10,236.71/15,348.76 = 3,989.45/x
  3. Step 3: Cross multiply
    10,236.71x = 15,348.76 × 3,989.45
  4. Step 4: Simplify right side
    10,236.71x = 61,233,138.98
  5. Step 5: Solve for x
    x = 61,233,138.98/10,236.71
  6. Step 6: Final answer
    x = 5,981.72

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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.