Home / 13,519.16-20,278.78-4,159.11

Finding the Fourth Proportional to 13,519.16, 20,278.78 and 4,159.11

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Solution

The fourth proportional to 13,519.16, 20,278.78 and 4,159.11 is: 6,238.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.16 : 20,278.78 = 4,159.11 : x
  2. Step 2: Convert to fraction form
    13,519.16/20,278.78 = 4,159.11/x
  3. Step 3: Cross multiply
    13,519.16x = 20,278.78 × 4,159.11
  4. Step 4: Simplify right side
    13,519.16x = 84,341,666.29
  5. Step 5: Solve for x
    x = 84,341,666.29/13,519.16
  6. Step 6: Final answer
    x = 6,238.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.