Home / 13,581.24-18,742.59-8,862.90

Finding the Fourth Proportional to 13,581.24, 18,742.59 and 8,862.90

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Solution

The fourth proportional to 13,581.24, 18,742.59 and 8,862.90 is: 12,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.24 : 18,742.59 = 8,862.90 : x
  2. Step 2: Convert to fraction form
    13,581.24/18,742.59 = 8,862.90/x
  3. Step 3: Cross multiply
    13,581.24x = 18,742.59 × 8,862.90
  4. Step 4: Simplify right side
    13,581.24x = 166,113,700.91
  5. Step 5: Solve for x
    x = 166,113,700.91/13,581.24
  6. Step 6: Final answer
    x = 12,231.11

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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.