Home / 28,679.70-43,019.56-8,959.82

Finding the Fourth Proportional to 28,679.70, 43,019.56 and 8,959.82

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Solution

The fourth proportional to 28,679.70, 43,019.56 and 8,959.82 is: 13,439.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.70 : 43,019.56 = 8,959.82 : x
  2. Step 2: Convert to fraction form
    28,679.70/43,019.56 = 8,959.82/x
  3. Step 3: Cross multiply
    28,679.70x = 43,019.56 × 8,959.82
  4. Step 4: Simplify right side
    28,679.70x = 385,447,254.18
  5. Step 5: Solve for x
    x = 385,447,254.18/28,679.70
  6. Step 6: Final answer
    x = 13,439.72

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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.