Home / 21,538.38-29,722.66-12,106.96

Finding the Fourth Proportional to 21,538.38, 29,722.66 and 12,106.96

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Solution

The fourth proportional to 21,538.38, 29,722.66 and 12,106.96 is: 16,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.38 : 29,722.66 = 12,106.96 : x
  2. Step 2: Convert to fraction form
    21,538.38/29,722.66 = 12,106.96/x
  3. Step 3: Cross multiply
    21,538.38x = 29,722.66 × 12,106.96
  4. Step 4: Simplify right side
    21,538.38x = 359,851,055.71
  5. Step 5: Solve for x
    x = 359,851,055.71/21,538.38
  6. Step 6: Final answer
    x = 16,707.43

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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.