Home / 12,590.28-18,869.26-5,199.92

Finding the Fourth Proportional to 12,590.28, 18,869.26 and 5,199.92

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Solution

The fourth proportional to 12,590.28, 18,869.26 and 5,199.92 is: 7,793.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.28 : 18,869.26 = 5,199.92 : x
  2. Step 2: Convert to fraction form
    12,590.28/18,869.26 = 5,199.92/x
  3. Step 3: Cross multiply
    12,590.28x = 18,869.26 × 5,199.92
  4. Step 4: Simplify right side
    12,590.28x = 98,118,642.46
  5. Step 5: Solve for x
    x = 98,118,642.46/12,590.28
  6. Step 6: Final answer
    x = 7,793.21

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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.