Home / 39,802.76-54,927-21,897.30

Finding the Fourth Proportional to 39,802.76, 54,927 and 21,897.30

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Solution

The fourth proportional to 39,802.76, 54,927 and 21,897.30 is: 30,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,802.76 : 54,927 = 21,897.30 : x
  2. Step 2: Convert to fraction form
    39,802.76/54,927 = 21,897.30/x
  3. Step 3: Cross multiply
    39,802.76x = 54,927 × 21,897.30
  4. Step 4: Simplify right side
    39,802.76x = 1,202,752,997.10
  5. Step 5: Solve for x
    x = 1,202,752,997.10/39,802.76
  6. Step 6: Final answer
    x = 30,217.83

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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.