Home / 15,876.19-21,899.10-10,201.18

Finding the Fourth Proportional to 15,876.19, 21,899.10 and 10,201.18

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Solution

The fourth proportional to 15,876.19, 21,899.10 and 10,201.18 is: 14,071.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.19 : 21,899.10 = 10,201.18 : x
  2. Step 2: Convert to fraction form
    15,876.19/21,899.10 = 10,201.18/x
  3. Step 3: Cross multiply
    15,876.19x = 21,899.10 × 10,201.18
  4. Step 4: Simplify right side
    15,876.19x = 223,396,609.93
  5. Step 5: Solve for x
    x = 223,396,609.93/15,876.19
  6. Step 6: Final answer
    x = 14,071.18

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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.