Home / 43,869.60-65,809.80-15,785.28

Finding the Fourth Proportional to 43,869.60, 65,809.80 and 15,785.28

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Solution

The fourth proportional to 43,869.60, 65,809.80 and 15,785.28 is: 23,679.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,869.60 : 65,809.80 = 15,785.28 : x
  2. Step 2: Convert to fraction form
    43,869.60/65,809.80 = 15,785.28/x
  3. Step 3: Cross multiply
    43,869.60x = 65,809.80 × 15,785.28
  4. Step 4: Simplify right side
    43,869.60x = 1,038,826,119.74
  5. Step 5: Solve for x
    x = 1,038,826,119.74/43,869.60
  6. Step 6: Final answer
    x = 23,679.86

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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.