Home / 39,407.96-54,382.52-21,502.58

Finding the Fourth Proportional to 39,407.96, 54,382.52 and 21,502.58

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Solution

The fourth proportional to 39,407.96, 54,382.52 and 21,502.58 is: 29,673.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,407.96 : 54,382.52 = 21,502.58 : x
  2. Step 2: Convert to fraction form
    39,407.96/54,382.52 = 21,502.58/x
  3. Step 3: Cross multiply
    39,407.96x = 54,382.52 × 21,502.58
  4. Step 4: Simplify right side
    39,407.96x = 1,169,364,486.90
  5. Step 5: Solve for x
    x = 1,169,364,486.90/39,407.96
  6. Step 6: Final answer
    x = 29,673.31

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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.