Home / 12,555.38-18,822.33-5,155.22

Finding the Fourth Proportional to 12,555.38, 18,822.33 and 5,155.22

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Solution

The fourth proportional to 12,555.38, 18,822.33 and 5,155.22 is: 7,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.38 : 18,822.33 = 5,155.22 : x
  2. Step 2: Convert to fraction form
    12,555.38/18,822.33 = 5,155.22/x
  3. Step 3: Cross multiply
    12,555.38x = 18,822.33 × 5,155.22
  4. Step 4: Simplify right side
    12,555.38x = 97,033,157.95
  5. Step 5: Solve for x
    x = 97,033,157.95/12,555.38
  6. Step 6: Final answer
    x = 7,728.42

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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.