Home / 20,322.18-28,044.90-11,370.06

Finding the Fourth Proportional to 20,322.18, 28,044.90 and 11,370.06

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Solution

The fourth proportional to 20,322.18, 28,044.90 and 11,370.06 is: 15,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.18 : 28,044.90 = 11,370.06 : x
  2. Step 2: Convert to fraction form
    20,322.18/28,044.90 = 11,370.06/x
  3. Step 3: Cross multiply
    20,322.18x = 28,044.90 × 11,370.06
  4. Step 4: Simplify right side
    20,322.18x = 318,872,195.69
  5. Step 5: Solve for x
    x = 318,872,195.69/20,322.18
  6. Step 6: Final answer
    x = 15,690.85

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1.5x scale

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.