Home / 39,345.30-54,296.53-21,440.25

Finding the Fourth Proportional to 39,345.30, 54,296.53 and 21,440.25

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Solution

The fourth proportional to 39,345.30, 54,296.53 and 21,440.25 is: 29,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,345.30 : 54,296.53 = 21,440.25 : x
  2. Step 2: Convert to fraction form
    39,345.30/54,296.53 = 21,440.25/x
  3. Step 3: Cross multiply
    39,345.30x = 54,296.53 × 21,440.25
  4. Step 4: Simplify right side
    39,345.30x = 1,164,131,123.73
  5. Step 5: Solve for x
    x = 1,164,131,123.73/39,345.30
  6. Step 6: Final answer
    x = 29,587.55

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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.