Home / 21,967.81-32,886.91-13,620.96

Finding the Fourth Proportional to 21,967.81, 32,886.91 and 13,620.96

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Solution

The fourth proportional to 21,967.81, 32,886.91 and 13,620.96 is: 20,391.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.81 : 32,886.91 = 13,620.96 : x
  2. Step 2: Convert to fraction form
    21,967.81/32,886.91 = 13,620.96/x
  3. Step 3: Cross multiply
    21,967.81x = 32,886.91 × 13,620.96
  4. Step 4: Simplify right side
    21,967.81x = 447,951,302.66
  5. Step 5: Solve for x
    x = 447,951,302.66/21,967.81
  6. Step 6: Final answer
    x = 20,391.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.