Home / 18,681.98-28,022.36-7,585.38

Finding the Fourth Proportional to 18,681.98, 28,022.36 and 7,585.38

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Solution

The fourth proportional to 18,681.98, 28,022.36 and 7,585.38 is: 11,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.98 : 28,022.36 = 7,585.38 : x
  2. Step 2: Convert to fraction form
    18,681.98/28,022.36 = 7,585.38/x
  3. Step 3: Cross multiply
    18,681.98x = 28,022.36 × 7,585.38
  4. Step 4: Simplify right side
    18,681.98x = 212,560,211.17
  5. Step 5: Solve for x
    x = 212,560,211.17/18,681.98
  6. Step 6: Final answer
    x = 11,377.82

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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.