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Finding the Fourth Proportional to 26,895.30, 40,337.55 and 12,855.30

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Solution

The fourth proportional to 26,895.30, 40,337.55 and 12,855.30 is: 19,280.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,895.30 : 40,337.55 = 12,855.30 : x
  2. Step 2: Convert to fraction form
    26,895.30/40,337.55 = 12,855.30/x
  3. Step 3: Cross multiply
    26,895.30x = 40,337.55 × 12,855.30
  4. Step 4: Simplify right side
    26,895.30x = 518,551,306.52
  5. Step 5: Solve for x
    x = 518,551,306.52/26,895.30
  6. Step 6: Final answer
    x = 19,280.37

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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.