Home / 43,415.52-65,132.16-18,455.52

Finding the Fourth Proportional to 43,415.52, 65,132.16 and 18,455.52

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Solution

The fourth proportional to 43,415.52, 65,132.16 and 18,455.52 is: 27,687.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,415.52 : 65,132.16 = 18,455.52 : x
  2. Step 2: Convert to fraction form
    43,415.52/65,132.16 = 18,455.52/x
  3. Step 3: Cross multiply
    43,415.52x = 65,132.16 × 18,455.52
  4. Step 4: Simplify right side
    43,415.52x = 1,202,047,881.52
  5. Step 5: Solve for x
    x = 1,202,047,881.52/43,415.52
  6. Step 6: Final answer
    x = 27,687.05

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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.