Home / 18,774.71-28,165.31-5,627.87

Finding the Fourth Proportional to 18,774.71, 28,165.31 and 5,627.87

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Solution

The fourth proportional to 18,774.71, 28,165.31 and 5,627.87 is: 8,442.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.71 : 28,165.31 = 5,627.87 : x
  2. Step 2: Convert to fraction form
    18,774.71/28,165.31 = 5,627.87/x
  3. Step 3: Cross multiply
    18,774.71x = 28,165.31 × 5,627.87
  4. Step 4: Simplify right side
    18,774.71x = 158,510,534.22
  5. Step 5: Solve for x
    x = 158,510,534.22/18,774.71
  6. Step 6: Final answer
    x = 8,442.77

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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.