Home / 39,390.97-54,360.28-21,486.62

Finding the Fourth Proportional to 39,390.97, 54,360.28 and 21,486.62

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Solution

The fourth proportional to 39,390.97, 54,360.28 and 21,486.62 is: 29,651.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.97 : 54,360.28 = 21,486.62 : x
  2. Step 2: Convert to fraction form
    39,390.97/54,360.28 = 21,486.62/x
  3. Step 3: Cross multiply
    39,390.97x = 54,360.28 × 21,486.62
  4. Step 4: Simplify right side
    39,390.97x = 1,168,018,436.12
  5. Step 5: Solve for x
    x = 1,168,018,436.12/39,390.97
  6. Step 6: Final answer
    x = 29,651.93

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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.