Home / 39,178.29-54,064.64-21,272.93

Finding the Fourth Proportional to 39,178.29, 54,064.64 and 21,272.93

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Solution

The fourth proportional to 39,178.29, 54,064.64 and 21,272.93 is: 29,355.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,178.29 : 54,064.64 = 21,272.93 : x
  2. Step 2: Convert to fraction form
    39,178.29/54,064.64 = 21,272.93/x
  3. Step 3: Cross multiply
    39,178.29x = 54,064.64 × 21,272.93
  4. Step 4: Simplify right side
    39,178.29x = 1,150,113,085.05
  5. Step 5: Solve for x
    x = 1,150,113,085.05/39,178.29
  6. Step 6: Final answer
    x = 29,355.88

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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.