Home / 43,001.28-64,509.21-13,418.46

Finding the Fourth Proportional to 43,001.28, 64,509.21 and 13,418.46

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Solution

The fourth proportional to 43,001.28, 64,509.21 and 13,418.46 is: 20,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,001.28 : 64,509.21 = 13,418.46 : x
  2. Step 2: Convert to fraction form
    43,001.28/64,509.21 = 13,418.46/x
  3. Step 3: Cross multiply
    43,001.28x = 64,509.21 × 13,418.46
  4. Step 4: Simplify right side
    43,001.28x = 865,614,254.02
  5. Step 5: Solve for x
    x = 865,614,254.02/43,001.28
  6. Step 6: Final answer
    x = 20,129.96

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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.