Home / 19,987.45-29,981.26-5,195.32

Finding the Fourth Proportional to 19,987.45, 29,981.26 and 5,195.32

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Solution

The fourth proportional to 19,987.45, 29,981.26 and 5,195.32 is: 7,793.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.45 : 29,981.26 = 5,195.32 : x
  2. Step 2: Convert to fraction form
    19,987.45/29,981.26 = 5,195.32/x
  3. Step 3: Cross multiply
    19,987.45x = 29,981.26 × 5,195.32
  4. Step 4: Simplify right side
    19,987.45x = 155,762,239.70
  5. Step 5: Solve for x
    x = 155,762,239.70/19,987.45
  6. Step 6: Final answer
    x = 7,793.00

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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.