Home / 39,231.59-54,138.96-21,327.05

Finding the Fourth Proportional to 39,231.59, 54,138.96 and 21,327.05

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Solution

The fourth proportional to 39,231.59, 54,138.96 and 21,327.05 is: 29,430.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,231.59 : 54,138.96 = 21,327.05 : x
  2. Step 2: Convert to fraction form
    39,231.59/54,138.96 = 21,327.05/x
  3. Step 3: Cross multiply
    39,231.59x = 54,138.96 × 21,327.05
  4. Step 4: Simplify right side
    39,231.59x = 1,154,624,077.70
  5. Step 5: Solve for x
    x = 1,154,624,077.70/39,231.59
  6. Step 6: Final answer
    x = 29,430.98

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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.