Home / 20,560.36-28,385.52-13,499.16

Finding the Fourth Proportional to 20,560.36, 28,385.52 and 13,499.16

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Solution

The fourth proportional to 20,560.36, 28,385.52 and 13,499.16 is: 18,636.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.36 : 28,385.52 = 13,499.16 : x
  2. Step 2: Convert to fraction form
    20,560.36/28,385.52 = 13,499.16/x
  3. Step 3: Cross multiply
    20,560.36x = 28,385.52 × 13,499.16
  4. Step 4: Simplify right side
    20,560.36x = 383,180,676.16
  5. Step 5: Solve for x
    x = 383,180,676.16/20,560.36
  6. Step 6: Final answer
    x = 18,636.87

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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.