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Finding the Fourth Proportional to 27,291.47, 40,928.49 and 10,647.45

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Solution

The fourth proportional to 27,291.47, 40,928.49 and 10,647.45 is: 15,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,291.47 : 40,928.49 = 10,647.45 : x
  2. Step 2: Convert to fraction form
    27,291.47/40,928.49 = 10,647.45/x
  3. Step 3: Cross multiply
    27,291.47x = 40,928.49 × 10,647.45
  4. Step 4: Simplify right side
    27,291.47x = 435,784,050.85
  5. Step 5: Solve for x
    x = 435,784,050.85/27,291.47
  6. Step 6: Final answer
    x = 15,967.78

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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.