Home / 13,471.44-18,587.88-7,881.36

Finding the Fourth Proportional to 13,471.44, 18,587.88 and 7,881.36

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Solution

The fourth proportional to 13,471.44, 18,587.88 and 7,881.36 is: 10,874.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471.44 : 18,587.88 = 7,881.36 : x
  2. Step 2: Convert to fraction form
    13,471.44/18,587.88 = 7,881.36/x
  3. Step 3: Cross multiply
    13,471.44x = 18,587.88 × 7,881.36
  4. Step 4: Simplify right side
    13,471.44x = 146,497,773.92
  5. Step 5: Solve for x
    x = 146,497,773.92/13,471.44
  6. Step 6: Final answer
    x = 10,874.69

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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.