Home / 39,635.19-54,696.58-21,729.83

Finding the Fourth Proportional to 39,635.19, 54,696.58 and 21,729.83

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Solution

The fourth proportional to 39,635.19, 54,696.58 and 21,729.83 is: 29,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.19 : 54,696.58 = 21,729.83 : x
  2. Step 2: Convert to fraction form
    39,635.19/54,696.58 = 21,729.83/x
  3. Step 3: Cross multiply
    39,635.19x = 54,696.58 × 21,729.83
  4. Step 4: Simplify right side
    39,635.19x = 1,188,547,057.17
  5. Step 5: Solve for x
    x = 1,188,547,057.17/39,635.19
  6. Step 6: Final answer
    x = 29,987.17

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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.