Home / 19,901.20-29,794.20-17,827.60

Finding the Fourth Proportional to 19,901.20, 29,794.20 and 17,827.60

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Solution

The fourth proportional to 19,901.20, 29,794.20 and 17,827.60 is: 26,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.20 : 29,794.20 = 17,827.60 : x
  2. Step 2: Convert to fraction form
    19,901.20/29,794.20 = 17,827.60/x
  3. Step 3: Cross multiply
    19,901.20x = 29,794.20 × 17,827.60
  4. Step 4: Simplify right side
    19,901.20x = 531,159,079.92
  5. Step 5: Solve for x
    x = 531,159,079.92/19,901.20
  6. Step 6: Final answer
    x = 26,689.80

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1.5x scale

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.