Home / 12,989.16-19,454.58-9,110.88

Finding the Fourth Proportional to 12,989.16, 19,454.58 and 9,110.88

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Solution

The fourth proportional to 12,989.16, 19,454.58 and 9,110.88 is: 13,645.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.16 : 19,454.58 = 9,110.88 : x
  2. Step 2: Convert to fraction form
    12,989.16/19,454.58 = 9,110.88/x
  3. Step 3: Cross multiply
    12,989.16x = 19,454.58 × 9,110.88
  4. Step 4: Simplify right side
    12,989.16x = 177,248,343.83
  5. Step 5: Solve for x
    x = 177,248,343.83/12,989.16
  6. Step 6: Final answer
    x = 13,645.87

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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.