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Finding the Fourth Proportional to 27,308.11, 40,964.44 and 7,320.45

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Solution

The fourth proportional to 27,308.11, 40,964.44 and 7,320.45 is: 10,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,308.11 : 40,964.44 = 7,320.45 : x
  2. Step 2: Convert to fraction form
    27,308.11/40,964.44 = 7,320.45/x
  3. Step 3: Cross multiply
    27,308.11x = 40,964.44 × 7,320.45
  4. Step 4: Simplify right side
    27,308.11x = 299,878,134.80
  5. Step 5: Solve for x
    x = 299,878,134.80/27,308.11
  6. Step 6: Final answer
    x = 10,981.28

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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.