Home / 18,139.89-27,207.80-6,291.48

Finding the Fourth Proportional to 18,139.89, 27,207.80 and 6,291.48

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Solution

The fourth proportional to 18,139.89, 27,207.80 and 6,291.48 is: 9,436.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.89 : 27,207.80 = 6,291.48 : x
  2. Step 2: Convert to fraction form
    18,139.89/27,207.80 = 6,291.48/x
  3. Step 3: Cross multiply
    18,139.89x = 27,207.80 × 6,291.48
  4. Step 4: Simplify right side
    18,139.89x = 171,177,423.71
  5. Step 5: Solve for x
    x = 171,177,423.71/18,139.89
  6. Step 6: Final answer
    x = 9,436.52

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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.