Home / 39,804.17-54,929.76-21,898.80

Finding the Fourth Proportional to 39,804.17, 54,929.76 and 21,898.80

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Solution

The fourth proportional to 39,804.17, 54,929.76 and 21,898.80 is: 30,220.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.17 : 54,929.76 = 21,898.80 : x
  2. Step 2: Convert to fraction form
    39,804.17/54,929.76 = 21,898.80/x
  3. Step 3: Cross multiply
    39,804.17x = 54,929.76 × 21,898.80
  4. Step 4: Simplify right side
    39,804.17x = 1,202,895,444.15
  5. Step 5: Solve for x
    x = 1,202,895,444.15/39,804.17
  6. Step 6: Final answer
    x = 30,220.34

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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.