Home / 13,155.49-18,149.20-9,714.32

Finding the Fourth Proportional to 13,155.49, 18,149.20 and 9,714.32

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Solution

The fourth proportional to 13,155.49, 18,149.20 and 9,714.32 is: 13,401.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.49 : 18,149.20 = 9,714.32 : x
  2. Step 2: Convert to fraction form
    13,155.49/18,149.20 = 9,714.32/x
  3. Step 3: Cross multiply
    13,155.49x = 18,149.20 × 9,714.32
  4. Step 4: Simplify right side
    13,155.49x = 176,307,045.80
  5. Step 5: Solve for x
    x = 176,307,045.80/13,155.49
  6. Step 6: Final answer
    x = 13,401.78

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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.