Home / 39,160.32-54,039.79-21,254.94

Finding the Fourth Proportional to 39,160.32, 54,039.79 and 21,254.94

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Solution

The fourth proportional to 39,160.32, 54,039.79 and 21,254.94 is: 29,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.32 : 54,039.79 = 21,254.94 : x
  2. Step 2: Convert to fraction form
    39,160.32/54,039.79 = 21,254.94/x
  3. Step 3: Cross multiply
    39,160.32x = 54,039.79 × 21,254.94
  4. Step 4: Simplify right side
    39,160.32x = 1,148,612,494.06
  5. Step 5: Solve for x
    x = 1,148,612,494.06/39,160.32
  6. Step 6: Final answer
    x = 29,331.03

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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.