Home / 20,446.18-28,218.08-11,372.46

Finding the Fourth Proportional to 20,446.18, 28,218.08 and 11,372.46

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Solution

The fourth proportional to 20,446.18, 28,218.08 and 11,372.46 is: 15,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.18 : 28,218.08 = 11,372.46 : x
  2. Step 2: Convert to fraction form
    20,446.18/28,218.08 = 11,372.46/x
  3. Step 3: Cross multiply
    20,446.18x = 28,218.08 × 11,372.46
  4. Step 4: Simplify right side
    20,446.18x = 320,908,986.08
  5. Step 5: Solve for x
    x = 320,908,986.08/20,446.18
  6. Step 6: Final answer
    x = 15,695.30

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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.