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Finding the Fourth Proportional to 27,259.80, 40,884.30 and 13,219.80

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Solution

The fourth proportional to 27,259.80, 40,884.30 and 13,219.80 is: 19,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,259.80 : 40,884.30 = 13,219.80 : x
  2. Step 2: Convert to fraction form
    27,259.80/40,884.30 = 13,219.80/x
  3. Step 3: Cross multiply
    27,259.80x = 40,884.30 × 13,219.80
  4. Step 4: Simplify right side
    27,259.80x = 540,482,269.14
  5. Step 5: Solve for x
    x = 540,482,269.14/27,259.80
  6. Step 6: Final answer
    x = 19,827.08

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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.