Home / 15,618.48-21,560.54-9,960.82

Finding the Fourth Proportional to 15,618.48, 21,560.54 and 9,960.82

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Solution

The fourth proportional to 15,618.48, 21,560.54 and 9,960.82 is: 13,750.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.48 : 21,560.54 = 9,960.82 : x
  2. Step 2: Convert to fraction form
    15,618.48/21,560.54 = 9,960.82/x
  3. Step 3: Cross multiply
    15,618.48x = 21,560.54 × 9,960.82
  4. Step 4: Simplify right side
    15,618.48x = 214,760,658.04
  5. Step 5: Solve for x
    x = 214,760,658.04/15,618.48
  6. Step 6: Final answer
    x = 13,750.42

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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.