Home / 19,987.08-29,985.48-8,293.92

Finding the Fourth Proportional to 19,987.08, 29,985.48 and 8,293.92

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Solution

The fourth proportional to 19,987.08, 29,985.48 and 8,293.92 is: 12,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.08 : 29,985.48 = 8,293.92 : x
  2. Step 2: Convert to fraction form
    19,987.08/29,985.48 = 8,293.92/x
  3. Step 3: Cross multiply
    19,987.08x = 29,985.48 × 8,293.92
  4. Step 4: Simplify right side
    19,987.08x = 248,697,172.28
  5. Step 5: Solve for x
    x = 248,697,172.28/19,987.08
  6. Step 6: Final answer
    x = 12,442.90

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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.