Home / 13,854.20-19,119.77-7,885.87

Finding the Fourth Proportional to 13,854.20, 19,119.77 and 7,885.87

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Solution

The fourth proportional to 13,854.20, 19,119.77 and 7,885.87 is: 10,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,854.20 : 19,119.77 = 7,885.87 : x
  2. Step 2: Convert to fraction form
    13,854.20/19,119.77 = 7,885.87/x
  3. Step 3: Cross multiply
    13,854.20x = 19,119.77 × 7,885.87
  4. Step 4: Simplify right side
    13,854.20x = 150,776,020.65
  5. Step 5: Solve for x
    x = 150,776,020.65/13,854.20
  6. Step 6: Final answer
    x = 10,883.06

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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.