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Finding the Fourth Proportional to 27,078.80, 40,585.80 and 13,924.40

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Solution

The fourth proportional to 27,078.80, 40,585.80 and 13,924.40 is: 20,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,078.80 : 40,585.80 = 13,924.40 : x
  2. Step 2: Convert to fraction form
    27,078.80/40,585.80 = 13,924.40/x
  3. Step 3: Cross multiply
    27,078.80x = 40,585.80 × 13,924.40
  4. Step 4: Simplify right side
    27,078.80x = 565,132,913.52
  5. Step 5: Solve for x
    x = 565,132,913.52/27,078.80
  6. Step 6: Final answer
    x = 20,869.94

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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.