Home / 15,246.45-21,038.40-8,531.15

Finding the Fourth Proportional to 15,246.45, 21,038.40 and 8,531.15

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Solution

The fourth proportional to 15,246.45, 21,038.40 and 8,531.15 is: 11,772.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,246.45 : 21,038.40 = 8,531.15 : x
  2. Step 2: Convert to fraction form
    15,246.45/21,038.40 = 8,531.15/x
  3. Step 3: Cross multiply
    15,246.45x = 21,038.40 × 8,531.15
  4. Step 4: Simplify right side
    15,246.45x = 179,481,640.97
  5. Step 5: Solve for x
    x = 179,481,640.97/15,246.45
  6. Step 6: Final answer
    x = 11,772.03

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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.