Home / 28,919.60-43,381.40-12,277.68

Finding the Fourth Proportional to 28,919.60, 43,381.40 and 12,277.68

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Solution

The fourth proportional to 28,919.60, 43,381.40 and 12,277.68 is: 18,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.60 : 43,381.40 = 12,277.68 : x
  2. Step 2: Convert to fraction form
    28,919.60/43,381.40 = 12,277.68/x
  3. Step 3: Cross multiply
    28,919.60x = 43,381.40 × 12,277.68
  4. Step 4: Simplify right side
    28,919.60x = 532,622,947.15
  5. Step 5: Solve for x
    x = 532,622,947.15/28,919.60
  6. Step 6: Final answer
    x = 18,417.37

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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.