Home / 20,538.13-28,342.62-11,106.69

Finding the Fourth Proportional to 20,538.13, 28,342.62 and 11,106.69

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Solution

The fourth proportional to 20,538.13, 28,342.62 and 11,106.69 is: 15,327.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.13 : 28,342.62 = 11,106.69 : x
  2. Step 2: Convert to fraction form
    20,538.13/28,342.62 = 11,106.69/x
  3. Step 3: Cross multiply
    20,538.13x = 28,342.62 × 11,106.69
  4. Step 4: Simplify right side
    20,538.13x = 314,792,638.59
  5. Step 5: Solve for x
    x = 314,792,638.59/20,538.13
  6. Step 6: Final answer
    x = 15,327.23

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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.