Home / 10,519.05-15,781.01-3,123.35

Finding the Fourth Proportional to 10,519.05, 15,781.01 and 3,123.35

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Solution

The fourth proportional to 10,519.05, 15,781.01 and 3,123.35 is: 4,685.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.05 : 15,781.01 = 3,123.35 : x
  2. Step 2: Convert to fraction form
    10,519.05/15,781.01 = 3,123.35/x
  3. Step 3: Cross multiply
    10,519.05x = 15,781.01 × 3,123.35
  4. Step 4: Simplify right side
    10,519.05x = 49,289,617.58
  5. Step 5: Solve for x
    x = 49,289,617.58/10,519.05
  6. Step 6: Final answer
    x = 4,685.75

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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.