Home / 19,987.88-29,981.84-5,195.56

Finding the Fourth Proportional to 19,987.88, 29,981.84 and 5,195.56

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Solution

The fourth proportional to 19,987.88, 29,981.84 and 5,195.56 is: 7,793.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.88 : 29,981.84 = 5,195.56 : x
  2. Step 2: Convert to fraction form
    19,987.88/29,981.84 = 5,195.56/x
  3. Step 3: Cross multiply
    19,987.88x = 29,981.84 × 5,195.56
  4. Step 4: Simplify right side
    19,987.88x = 155,772,448.63
  5. Step 5: Solve for x
    x = 155,772,448.63/19,987.88
  6. Step 6: Final answer
    x = 7,793.35

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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.