Home / 39,804.70-54,929.10-21,899.52

Finding the Fourth Proportional to 39,804.70, 54,929.10 and 21,899.52

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Solution

The fourth proportional to 39,804.70, 54,929.10 and 21,899.52 is: 30,220.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.70 : 54,929.10 = 21,899.52 : x
  2. Step 2: Convert to fraction form
    39,804.70/54,929.10 = 21,899.52/x
  3. Step 3: Cross multiply
    39,804.70x = 54,929.10 × 21,899.52
  4. Step 4: Simplify right side
    39,804.70x = 1,202,920,924.03
  5. Step 5: Solve for x
    x = 1,202,920,924.03/39,804.70
  6. Step 6: Final answer
    x = 30,220.58

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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.