Home / 10,456.43-15,687.20-3,436.45

Finding the Fourth Proportional to 10,456.43, 15,687.20 and 3,436.45

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Solution

The fourth proportional to 10,456.43, 15,687.20 and 3,436.45 is: 5,155.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,456.43 : 15,687.20 = 3,436.45 : x
  2. Step 2: Convert to fraction form
    10,456.43/15,687.20 = 3,436.45/x
  3. Step 3: Cross multiply
    10,456.43x = 15,687.20 × 3,436.45
  4. Step 4: Simplify right side
    10,456.43x = 53,908,247.81
  5. Step 5: Solve for x
    x = 53,908,247.81/10,456.43
  6. Step 6: Final answer
    x = 5,155.51

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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.