Home / 19,987.41-29,972.63-8,886.51

Finding the Fourth Proportional to 19,987.41, 29,972.63 and 8,886.51

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Solution

The fourth proportional to 19,987.41, 29,972.63 and 8,886.51 is: 13,325.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.41 : 29,972.63 = 8,886.51 : x
  2. Step 2: Convert to fraction form
    19,987.41/29,972.63 = 8,886.51/x
  3. Step 3: Cross multiply
    19,987.41x = 29,972.63 × 8,886.51
  4. Step 4: Simplify right side
    19,987.41x = 266,352,098.44
  5. Step 5: Solve for x
    x = 266,352,098.44/19,987.41
  6. Step 6: Final answer
    x = 13,325.99

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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.