Home / 15,618.74-21,542.66-9,947.57

Finding the Fourth Proportional to 15,618.74, 21,542.66 and 9,947.57

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Solution

The fourth proportional to 15,618.74, 21,542.66 and 9,947.57 is: 13,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.74 : 21,542.66 = 9,947.57 : x
  2. Step 2: Convert to fraction form
    15,618.74/21,542.66 = 9,947.57/x
  3. Step 3: Cross multiply
    15,618.74x = 21,542.66 × 9,947.57
  4. Step 4: Simplify right side
    15,618.74x = 214,296,960.89
  5. Step 5: Solve for x
    x = 214,296,960.89/15,618.74
  6. Step 6: Final answer
    x = 13,720.51

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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.