Home / 20,301.50-28,016.07-12,342.23

Finding the Fourth Proportional to 20,301.50, 28,016.07 and 12,342.23

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Solution

The fourth proportional to 20,301.50, 28,016.07 and 12,342.23 is: 17,032.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.50 : 28,016.07 = 12,342.23 : x
  2. Step 2: Convert to fraction form
    20,301.50/28,016.07 = 12,342.23/x
  3. Step 3: Cross multiply
    20,301.50x = 28,016.07 × 12,342.23
  4. Step 4: Simplify right side
    20,301.50x = 345,780,779.64
  5. Step 5: Solve for x
    x = 345,780,779.64/20,301.50
  6. Step 6: Final answer
    x = 17,032.28

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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.