Home / 18,686.40-28,033.70-5,537.97

Finding the Fourth Proportional to 18,686.40, 28,033.70 and 5,537.97

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Solution

The fourth proportional to 18,686.40, 28,033.70 and 5,537.97 is: 8,308.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.40 : 28,033.70 = 5,537.97 : x
  2. Step 2: Convert to fraction form
    18,686.40/28,033.70 = 5,537.97/x
  3. Step 3: Cross multiply
    18,686.40x = 28,033.70 × 5,537.97
  4. Step 4: Simplify right side
    18,686.40x = 155,249,761.90
  5. Step 5: Solve for x
    x = 155,249,761.90/18,686.40
  6. Step 6: Final answer
    x = 8,308.17

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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.