Home / 18,878.32-28,321.71-6,397.39

Finding the Fourth Proportional to 18,878.32, 28,321.71 and 6,397.39

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Solution

The fourth proportional to 18,878.32, 28,321.71 and 6,397.39 is: 9,597.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.32 : 28,321.71 = 6,397.39 : x
  2. Step 2: Convert to fraction form
    18,878.32/28,321.71 = 6,397.39/x
  3. Step 3: Cross multiply
    18,878.32x = 28,321.71 × 6,397.39
  4. Step 4: Simplify right side
    18,878.32x = 181,185,024.34
  5. Step 5: Solve for x
    x = 181,185,024.34/18,878.32
  6. Step 6: Final answer
    x = 9,597.52

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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.