Home / 12,158.44-18,242.18-5,140.28

Finding the Fourth Proportional to 12,158.44, 18,242.18 and 5,140.28

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Solution

The fourth proportional to 12,158.44, 18,242.18 and 5,140.28 is: 7,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.44 : 18,242.18 = 5,140.28 : x
  2. Step 2: Convert to fraction form
    12,158.44/18,242.18 = 5,140.28/x
  3. Step 3: Cross multiply
    12,158.44x = 18,242.18 × 5,140.28
  4. Step 4: Simplify right side
    12,158.44x = 93,769,913.01
  5. Step 5: Solve for x
    x = 93,769,913.01/12,158.44
  6. Step 6: Final answer
    x = 7,712.33

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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.