Home / 21,031.57-29,016.23-13,482.06

Finding the Fourth Proportional to 21,031.57, 29,016.23 and 13,482.06

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Solution

The fourth proportional to 21,031.57, 29,016.23 and 13,482.06 is: 18,600.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.57 : 29,016.23 = 13,482.06 : x
  2. Step 2: Convert to fraction form
    21,031.57/29,016.23 = 13,482.06/x
  3. Step 3: Cross multiply
    21,031.57x = 29,016.23 × 13,482.06
  4. Step 4: Simplify right side
    21,031.57x = 391,198,587.54
  5. Step 5: Solve for x
    x = 391,198,587.54/21,031.57
  6. Step 6: Final answer
    x = 18,600.54

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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.