Home / 19,987.98-29,981.96-5,947.94

Finding the Fourth Proportional to 19,987.98, 29,981.96 and 5,947.94

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Solution

The fourth proportional to 19,987.98, 29,981.96 and 5,947.94 is: 8,921.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.98 : 29,981.96 = 5,947.94 : x
  2. Step 2: Convert to fraction form
    19,987.98/29,981.96 = 5,947.94/x
  3. Step 3: Cross multiply
    19,987.98x = 29,981.96 × 5,947.94
  4. Step 4: Simplify right side
    19,987.98x = 178,330,899.16
  5. Step 5: Solve for x
    x = 178,330,899.16/19,987.98
  6. Step 6: Final answer
    x = 8,921.91

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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.