Home / 43,805.20-65,707.80-18,857.20

Finding the Fourth Proportional to 43,805.20, 65,707.80 and 18,857.20

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Solution

The fourth proportional to 43,805.20, 65,707.80 and 18,857.20 is: 28,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,805.20 : 65,707.80 = 18,857.20 : x
  2. Step 2: Convert to fraction form
    43,805.20/65,707.80 = 18,857.20/x
  3. Step 3: Cross multiply
    43,805.20x = 65,707.80 × 18,857.20
  4. Step 4: Simplify right side
    43,805.20x = 1,239,065,126.16
  5. Step 5: Solve for x
    x = 1,239,065,126.16/43,805.20
  6. Step 6: Final answer
    x = 28,285.80

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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.