Home / 15,645.75-21,591.14-9,359.61

Finding the Fourth Proportional to 15,645.75, 21,591.14 and 9,359.61

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Solution

The fourth proportional to 15,645.75, 21,591.14 and 9,359.61 is: 12,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.75 : 21,591.14 = 9,359.61 : x
  2. Step 2: Convert to fraction form
    15,645.75/21,591.14 = 9,359.61/x
  3. Step 3: Cross multiply
    15,645.75x = 21,591.14 × 9,359.61
  4. Step 4: Simplify right side
    15,645.75x = 202,084,603.06
  5. Step 5: Solve for x
    x = 202,084,603.06/15,645.75
  6. Step 6: Final answer
    x = 12,916.26

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1.5x scale

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.