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Finding the Fourth Proportional to 27,143.71, 40,715.53 and 7,422.44

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Solution

The fourth proportional to 27,143.71, 40,715.53 and 7,422.44 is: 11,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.71 : 40,715.53 = 7,422.44 : x
  2. Step 2: Convert to fraction form
    27,143.71/40,715.53 = 7,422.44/x
  3. Step 3: Cross multiply
    27,143.71x = 40,715.53 × 7,422.44
  4. Step 4: Simplify right side
    27,143.71x = 302,208,356.36
  5. Step 5: Solve for x
    x = 302,208,356.36/27,143.71
  6. Step 6: Final answer
    x = 11,133.64

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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.