Home / 15,435.11-21,300-9,061.59

Finding the Fourth Proportional to 15,435.11, 21,300 and 9,061.59

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Solution

The fourth proportional to 15,435.11, 21,300 and 9,061.59 is: 12,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.11 : 21,300 = 9,061.59 : x
  2. Step 2: Convert to fraction form
    15,435.11/21,300 = 9,061.59/x
  3. Step 3: Cross multiply
    15,435.11x = 21,300 × 9,061.59
  4. Step 4: Simplify right side
    15,435.11x = 193,011,867
  5. Step 5: Solve for x
    x = 193,011,867/15,435.11
  6. Step 6: Final answer
    x = 12,504.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.