Home / 18,918.71-28,377-5,770.04

Finding the Fourth Proportional to 18,918.71, 28,377 and 5,770.04

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Solution

The fourth proportional to 18,918.71, 28,377 and 5,770.04 is: 8,654.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.71 : 28,377 = 5,770.04 : x
  2. Step 2: Convert to fraction form
    18,918.71/28,377 = 5,770.04/x
  3. Step 3: Cross multiply
    18,918.71x = 28,377 × 5,770.04
  4. Step 4: Simplify right side
    18,918.71x = 163,736,496.02
  5. Step 5: Solve for x
    x = 163,736,496.02/18,918.71
  6. Step 6: Final answer
    x = 8,654.74

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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.