Home / 27,108.12-40,638.78-10,479.80

Finding the Fourth Proportional to 27,108.12, 40,638.78 and 10,479.80

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Solution

The fourth proportional to 27,108.12, 40,638.78 and 10,479.80 is: 15,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,108.12 : 40,638.78 = 10,479.80 : x
  2. Step 2: Convert to fraction form
    27,108.12/40,638.78 = 10,479.80/x
  3. Step 3: Cross multiply
    27,108.12x = 40,638.78 × 10,479.80
  4. Step 4: Simplify right side
    27,108.12x = 425,886,286.64
  5. Step 5: Solve for x
    x = 425,886,286.64/27,108.12
  6. Step 6: Final answer
    x = 15,710.65

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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.