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Finding the Fourth Proportional to 27,315.72, 40,975.02 and 15,640.20

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Solution

The fourth proportional to 27,315.72, 40,975.02 and 15,640.20 is: 23,461.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,315.72 : 40,975.02 = 15,640.20 : x
  2. Step 2: Convert to fraction form
    27,315.72/40,975.02 = 15,640.20/x
  3. Step 3: Cross multiply
    27,315.72x = 40,975.02 × 15,640.20
  4. Step 4: Simplify right side
    27,315.72x = 640,857,507.80
  5. Step 5: Solve for x
    x = 640,857,507.80/27,315.72
  6. Step 6: Final answer
    x = 23,461.12

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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.