Home / 39,156.32-54,036.24-21,251.54

Finding the Fourth Proportional to 39,156.32, 54,036.24 and 21,251.54

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Solution

The fourth proportional to 39,156.32, 54,036.24 and 21,251.54 is: 29,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.32 : 54,036.24 = 21,251.54 : x
  2. Step 2: Convert to fraction form
    39,156.32/54,036.24 = 21,251.54/x
  3. Step 3: Cross multiply
    39,156.32x = 54,036.24 × 21,251.54
  4. Step 4: Simplify right side
    39,156.32x = 1,148,353,315.81
  5. Step 5: Solve for x
    x = 1,148,353,315.81/39,156.32
  6. Step 6: Final answer
    x = 29,327.41

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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.