Home / 20,538.74-28,344.77-11,582.97

Finding the Fourth Proportional to 20,538.74, 28,344.77 and 11,582.97

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Solution

The fourth proportional to 20,538.74, 28,344.77 and 11,582.97 is: 15,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.74 : 28,344.77 = 11,582.97 : x
  2. Step 2: Convert to fraction form
    20,538.74/28,344.77 = 11,582.97/x
  3. Step 3: Cross multiply
    20,538.74x = 28,344.77 × 11,582.97
  4. Step 4: Simplify right side
    20,538.74x = 328,316,787.82
  5. Step 5: Solve for x
    x = 328,316,787.82/20,538.74
  6. Step 6: Final answer
    x = 15,985.25

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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.