Home / 13,139.11-19,711.46-4,254.90

Finding the Fourth Proportional to 13,139.11, 19,711.46 and 4,254.90

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Solution

The fourth proportional to 13,139.11, 19,711.46 and 4,254.90 is: 6,383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.11 : 19,711.46 = 4,254.90 : x
  2. Step 2: Convert to fraction form
    13,139.11/19,711.46 = 4,254.90/x
  3. Step 3: Cross multiply
    13,139.11x = 19,711.46 × 4,254.90
  4. Step 4: Simplify right side
    13,139.11x = 83,870,291.15
  5. Step 5: Solve for x
    x = 83,870,291.15/13,139.11
  6. Step 6: Final answer
    x = 6,383.26

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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.