Home / 15,512.88-21,412.18-9,143.18

Finding the Fourth Proportional to 15,512.88, 21,412.18 and 9,143.18

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Solution

The fourth proportional to 15,512.88, 21,412.18 and 9,143.18 is: 12,620.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.88 : 21,412.18 = 9,143.18 : x
  2. Step 2: Convert to fraction form
    15,512.88/21,412.18 = 9,143.18/x
  3. Step 3: Cross multiply
    15,512.88x = 21,412.18 × 9,143.18
  4. Step 4: Simplify right side
    15,512.88x = 195,775,400.60
  5. Step 5: Solve for x
    x = 195,775,400.60/15,512.88
  6. Step 6: Final answer
    x = 12,620.18

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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.