Home / 43,147.17-64,720.22-11,982.15

Finding the Fourth Proportional to 43,147.17, 64,720.22 and 11,982.15

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Solution

The fourth proportional to 43,147.17, 64,720.22 and 11,982.15 is: 17,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,147.17 : 64,720.22 = 11,982.15 : x
  2. Step 2: Convert to fraction form
    43,147.17/64,720.22 = 11,982.15/x
  3. Step 3: Cross multiply
    43,147.17x = 64,720.22 × 11,982.15
  4. Step 4: Simplify right side
    43,147.17x = 775,487,324.16
  5. Step 5: Solve for x
    x = 775,487,324.16/43,147.17
  6. Step 6: Final answer
    x = 17,973.08

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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.