Home / 15,124.36-20,869.22-8,750.43

Finding the Fourth Proportional to 15,124.36, 20,869.22 and 8,750.43

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Solution

The fourth proportional to 15,124.36, 20,869.22 and 8,750.43 is: 12,074.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.36 : 20,869.22 = 8,750.43 : x
  2. Step 2: Convert to fraction form
    15,124.36/20,869.22 = 8,750.43/x
  3. Step 3: Cross multiply
    15,124.36x = 20,869.22 × 8,750.43
  4. Step 4: Simplify right side
    15,124.36x = 182,614,646.03
  5. Step 5: Solve for x
    x = 182,614,646.03/15,124.36
  6. Step 6: Final answer
    x = 12,074.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.