Home / 39,178.79-54,065.33-21,273.43

Finding the Fourth Proportional to 39,178.79, 54,065.33 and 21,273.43

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Solution

The fourth proportional to 39,178.79, 54,065.33 and 21,273.43 is: 29,356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,178.79 : 54,065.33 = 21,273.43 : x
  2. Step 2: Convert to fraction form
    39,178.79/54,065.33 = 21,273.43/x
  3. Step 3: Cross multiply
    39,178.79x = 54,065.33 × 21,273.43
  4. Step 4: Simplify right side
    39,178.79x = 1,150,154,742.86
  5. Step 5: Solve for x
    x = 1,150,154,742.86/39,178.79
  6. Step 6: Final answer
    x = 29,356.57

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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.