Home / 39,904.84-55,068.80-21,999.44

Finding the Fourth Proportional to 39,904.84, 55,068.80 and 21,999.44

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Solution

The fourth proportional to 39,904.84, 55,068.80 and 21,999.44 is: 30,359.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,904.84 : 55,068.80 = 21,999.44 : x
  2. Step 2: Convert to fraction form
    39,904.84/55,068.80 = 21,999.44/x
  3. Step 3: Cross multiply
    39,904.84x = 55,068.80 × 21,999.44
  4. Step 4: Simplify right side
    39,904.84x = 1,211,482,761.47
  5. Step 5: Solve for x
    x = 1,211,482,761.47/39,904.84
  6. Step 6: Final answer
    x = 30,359.29

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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.