Home / 19,965.60-29,948.40-6,112.80

Finding the Fourth Proportional to 19,965.60, 29,948.40 and 6,112.80

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Solution

The fourth proportional to 19,965.60, 29,948.40 and 6,112.80 is: 9,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.60 : 29,948.40 = 6,112.80 : x
  2. Step 2: Convert to fraction form
    19,965.60/29,948.40 = 6,112.80/x
  3. Step 3: Cross multiply
    19,965.60x = 29,948.40 × 6,112.80
  4. Step 4: Simplify right side
    19,965.60x = 183,068,579.52
  5. Step 5: Solve for x
    x = 183,068,579.52/19,965.60
  6. Step 6: Final answer
    x = 9,169.20

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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.