Home / 27,315.20-40,972.80-9,778.70

Finding the Fourth Proportional to 27,315.20, 40,972.80 and 9,778.70

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Solution

The fourth proportional to 27,315.20, 40,972.80 and 9,778.70 is: 14,668.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,315.20 : 40,972.80 = 9,778.70 : x
  2. Step 2: Convert to fraction form
    27,315.20/40,972.80 = 9,778.70/x
  3. Step 3: Cross multiply
    27,315.20x = 40,972.80 × 9,778.70
  4. Step 4: Simplify right side
    27,315.20x = 400,660,719.36
  5. Step 5: Solve for x
    x = 400,660,719.36/27,315.20
  6. Step 6: Final answer
    x = 14,668.05

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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.