Home / 28,921.40-43,349.70-12,278.60

Finding the Fourth Proportional to 28,921.40, 43,349.70 and 12,278.60

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Solution

The fourth proportional to 28,921.40, 43,349.70 and 12,278.60 is: 18,404.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.40 : 43,349.70 = 12,278.60 : x
  2. Step 2: Convert to fraction form
    28,921.40/43,349.70 = 12,278.60/x
  3. Step 3: Cross multiply
    28,921.40x = 43,349.70 × 12,278.60
  4. Step 4: Simplify right side
    28,921.40x = 532,273,626.42
  5. Step 5: Solve for x
    x = 532,273,626.42/28,921.40
  6. Step 6: Final answer
    x = 18,404.14

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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.