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Finding the Fourth Proportional to 27,062.40, 40,574.40 and 12,278.40

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Solution

The fourth proportional to 27,062.40, 40,574.40 and 12,278.40 is: 18,408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,062.40 : 40,574.40 = 12,278.40 : x
  2. Step 2: Convert to fraction form
    27,062.40/40,574.40 = 12,278.40/x
  3. Step 3: Cross multiply
    27,062.40x = 40,574.40 × 12,278.40
  4. Step 4: Simplify right side
    27,062.40x = 498,188,712.96
  5. Step 5: Solve for x
    x = 498,188,712.96/27,062.40
  6. Step 6: Final answer
    x = 18,408.89

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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.