Home / 28,985.04-43,480.26-12,115.98

Finding the Fourth Proportional to 28,985.04, 43,480.26 and 12,115.98

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Solution

The fourth proportional to 28,985.04, 43,480.26 and 12,115.98 is: 18,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.04 : 43,480.26 = 12,115.98 : x
  2. Step 2: Convert to fraction form
    28,985.04/43,480.26 = 12,115.98/x
  3. Step 3: Cross multiply
    28,985.04x = 43,480.26 × 12,115.98
  4. Step 4: Simplify right side
    28,985.04x = 526,805,960.55
  5. Step 5: Solve for x
    x = 526,805,960.55/28,985.04
  6. Step 6: Final answer
    x = 18,175.10

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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.