Home / 38,577.60-57,866.40-21,988.80

Finding the Fourth Proportional to 38,577.60, 57,866.40 and 21,988.80

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Solution

The fourth proportional to 38,577.60, 57,866.40 and 21,988.80 is: 32,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,577.60 : 57,866.40 = 21,988.80 : x
  2. Step 2: Convert to fraction form
    38,577.60/57,866.40 = 21,988.80/x
  3. Step 3: Cross multiply
    38,577.60x = 57,866.40 × 21,988.80
  4. Step 4: Simplify right side
    38,577.60x = 1,272,412,696.32
  5. Step 5: Solve for x
    x = 1,272,412,696.32/38,577.60
  6. Step 6: Final answer
    x = 32,983.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.