Home / 18,765.10-28,152.15-5,617.18

Finding the Fourth Proportional to 18,765.10, 28,152.15 and 5,617.18

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Solution

The fourth proportional to 18,765.10, 28,152.15 and 5,617.18 is: 8,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.10 : 28,152.15 = 5,617.18 : x
  2. Step 2: Convert to fraction form
    18,765.10/28,152.15 = 5,617.18/x
  3. Step 3: Cross multiply
    18,765.10x = 28,152.15 × 5,617.18
  4. Step 4: Simplify right side
    18,765.10x = 158,135,693.94
  5. Step 5: Solve for x
    x = 158,135,693.94/18,765.10
  6. Step 6: Final answer
    x = 8,427.12

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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.