Home / 38,636.82-53,320.13-21,641.79

Finding the Fourth Proportional to 38,636.82, 53,320.13 and 21,641.79

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Solution

The fourth proportional to 38,636.82, 53,320.13 and 21,641.79 is: 29,866.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,636.82 : 53,320.13 = 21,641.79 : x
  2. Step 2: Convert to fraction form
    38,636.82/53,320.13 = 21,641.79/x
  3. Step 3: Cross multiply
    38,636.82x = 53,320.13 × 21,641.79
  4. Step 4: Simplify right side
    38,636.82x = 1,153,942,948.02
  5. Step 5: Solve for x
    x = 1,153,942,948.02/38,636.82
  6. Step 6: Final answer
    x = 29,866.41

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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.