Home / 15,618.52-21,553.64-9,648.84

Finding the Fourth Proportional to 15,618.52, 21,553.64 and 9,648.84

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Solution

The fourth proportional to 15,618.52, 21,553.64 and 9,648.84 is: 13,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.52 : 21,553.64 = 9,648.84 : x
  2. Step 2: Convert to fraction form
    15,618.52/21,553.64 = 9,648.84/x
  3. Step 3: Cross multiply
    15,618.52x = 21,553.64 × 9,648.84
  4. Step 4: Simplify right side
    15,618.52x = 207,967,623.78
  5. Step 5: Solve for x
    x = 207,967,623.78/15,618.52
  6. Step 6: Final answer
    x = 13,315.45

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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.