Home / 19,988.08-29,982.39-7,505.80

Finding the Fourth Proportional to 19,988.08, 29,982.39 and 7,505.80

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Solution

The fourth proportional to 19,988.08, 29,982.39 and 7,505.80 is: 11,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.08 : 29,982.39 = 7,505.80 : x
  2. Step 2: Convert to fraction form
    19,988.08/29,982.39 = 7,505.80/x
  3. Step 3: Cross multiply
    19,988.08x = 29,982.39 × 7,505.80
  4. Step 4: Simplify right side
    19,988.08x = 225,041,822.86
  5. Step 5: Solve for x
    x = 225,041,822.86/19,988.08
  6. Step 6: Final answer
    x = 11,258.80

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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.