Home / 20,698.17-28,559.14-13,538.58

Finding the Fourth Proportional to 20,698.17, 28,559.14 and 13,538.58

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Solution

The fourth proportional to 20,698.17, 28,559.14 and 13,538.58 is: 18,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.17 : 28,559.14 = 13,538.58 : x
  2. Step 2: Convert to fraction form
    20,698.17/28,559.14 = 13,538.58/x
  3. Step 3: Cross multiply
    20,698.17x = 28,559.14 × 13,538.58
  4. Step 4: Simplify right side
    20,698.17x = 386,650,201.62
  5. Step 5: Solve for x
    x = 386,650,201.62/20,698.17
  6. Step 6: Final answer
    x = 18,680.41

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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.