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Finding the Fourth Proportional to 27,289.80, 40,913.10 and 14,977.80

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Solution

The fourth proportional to 27,289.80, 40,913.10 and 14,977.80 is: 22,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,289.80 : 40,913.10 = 14,977.80 : x
  2. Step 2: Convert to fraction form
    27,289.80/40,913.10 = 14,977.80/x
  3. Step 3: Cross multiply
    27,289.80x = 40,913.10 × 14,977.80
  4. Step 4: Simplify right side
    27,289.80x = 612,788,229.18
  5. Step 5: Solve for x
    x = 612,788,229.18/27,289.80
  6. Step 6: Final answer
    x = 22,454.85

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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.