Home / 15,620.88-21,549.32-9,650.38

Finding the Fourth Proportional to 15,620.88, 21,549.32 and 9,650.38

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Solution

The fourth proportional to 15,620.88, 21,549.32 and 9,650.38 is: 13,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.88 : 21,549.32 = 9,650.38 : x
  2. Step 2: Convert to fraction form
    15,620.88/21,549.32 = 9,650.38/x
  3. Step 3: Cross multiply
    15,620.88x = 21,549.32 × 9,650.38
  4. Step 4: Simplify right side
    15,620.88x = 207,959,126.74
  5. Step 5: Solve for x
    x = 207,959,126.74/15,620.88
  6. Step 6: Final answer
    x = 13,312.89

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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.