Home / 18,326.16-27,488.70-5,178.31

Finding the Fourth Proportional to 18,326.16, 27,488.70 and 5,178.31

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Solution

The fourth proportional to 18,326.16, 27,488.70 and 5,178.31 is: 7,767.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.16 : 27,488.70 = 5,178.31 : x
  2. Step 2: Convert to fraction form
    18,326.16/27,488.70 = 5,178.31/x
  3. Step 3: Cross multiply
    18,326.16x = 27,488.70 × 5,178.31
  4. Step 4: Simplify right side
    18,326.16x = 142,344,941.38
  5. Step 5: Solve for x
    x = 142,344,941.38/18,326.16
  6. Step 6: Final answer
    x = 7,767.31

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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.