Home / 39,767.10-54,877.88-21,861.72

Finding the Fourth Proportional to 39,767.10, 54,877.88 and 21,861.72

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Solution

The fourth proportional to 39,767.10, 54,877.88 and 21,861.72 is: 30,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,767.10 : 54,877.88 = 21,861.72 : x
  2. Step 2: Convert to fraction form
    39,767.10/54,877.88 = 21,861.72/x
  3. Step 3: Cross multiply
    39,767.10x = 54,877.88 × 21,861.72
  4. Step 4: Simplify right side
    39,767.10x = 1,199,724,994.27
  5. Step 5: Solve for x
    x = 1,199,724,994.27/39,767.10
  6. Step 6: Final answer
    x = 30,168.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.