Home / 20,342.42-30,477.74-17,815.41

Finding the Fourth Proportional to 20,342.42, 30,477.74 and 17,815.41

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Solution

The fourth proportional to 20,342.42, 30,477.74 and 17,815.41 is: 26,691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.42 : 30,477.74 = 17,815.41 : x
  2. Step 2: Convert to fraction form
    20,342.42/30,477.74 = 17,815.41/x
  3. Step 3: Cross multiply
    20,342.42x = 30,477.74 × 17,815.41
  4. Step 4: Simplify right side
    20,342.42x = 542,973,281.58
  5. Step 5: Solve for x
    x = 542,973,281.58/20,342.42
  6. Step 6: Final answer
    x = 26,691.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.