Home / 12,178.62-18,275.16-5,158.26

Finding the Fourth Proportional to 12,178.62, 18,275.16 and 5,158.26

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Solution

The fourth proportional to 12,178.62, 18,275.16 and 5,158.26 is: 7,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.62 : 18,275.16 = 5,158.26 : x
  2. Step 2: Convert to fraction form
    12,178.62/18,275.16 = 5,158.26/x
  3. Step 3: Cross multiply
    12,178.62x = 18,275.16 × 5,158.26
  4. Step 4: Simplify right side
    12,178.62x = 94,268,026.82
  5. Step 5: Solve for x
    x = 94,268,026.82/12,178.62
  6. Step 6: Final answer
    x = 7,740.45

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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.