Home / 15,691.24-21,645.88-10,020.03

Finding the Fourth Proportional to 15,691.24, 21,645.88 and 10,020.03

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Solution

The fourth proportional to 15,691.24, 21,645.88 and 10,020.03 is: 13,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.24 : 21,645.88 = 10,020.03 : x
  2. Step 2: Convert to fraction form
    15,691.24/21,645.88 = 10,020.03/x
  3. Step 3: Cross multiply
    15,691.24x = 21,645.88 × 10,020.03
  4. Step 4: Simplify right side
    15,691.24x = 216,892,378.00
  5. Step 5: Solve for x
    x = 216,892,378.00/15,691.24
  6. Step 6: Final answer
    x = 13,822.51

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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.