Home / 19,929.60-29,851.20-17,740.80

Finding the Fourth Proportional to 19,929.60, 29,851.20 and 17,740.80

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Solution

The fourth proportional to 19,929.60, 29,851.20 and 17,740.80 is: 26,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.60 : 29,851.20 = 17,740.80 : x
  2. Step 2: Convert to fraction form
    19,929.60/29,851.20 = 17,740.80/x
  3. Step 3: Cross multiply
    19,929.60x = 29,851.20 × 17,740.80
  4. Step 4: Simplify right side
    19,929.60x = 529,584,168.96
  5. Step 5: Solve for x
    x = 529,584,168.96/19,929.60
  6. Step 6: Final answer
    x = 26,572.74

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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.