Home / 21,808.14-30,111.98-15,854.04

Finding the Fourth Proportional to 21,808.14, 30,111.98 and 15,854.04

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Solution

The fourth proportional to 21,808.14, 30,111.98 and 15,854.04 is: 21,890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.14 : 30,111.98 = 15,854.04 : x
  2. Step 2: Convert to fraction form
    21,808.14/30,111.98 = 15,854.04/x
  3. Step 3: Cross multiply
    21,808.14x = 30,111.98 × 15,854.04
  4. Step 4: Simplify right side
    21,808.14x = 477,396,456.13
  5. Step 5: Solve for x
    x = 477,396,456.13/21,808.14
  6. Step 6: Final answer
    x = 21,890.75

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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.