Home / 26,985.90-40,466.70-12,187.20

Finding the Fourth Proportional to 26,985.90, 40,466.70 and 12,187.20

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Solution

The fourth proportional to 26,985.90, 40,466.70 and 12,187.20 is: 18,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,985.90 : 40,466.70 = 12,187.20 : x
  2. Step 2: Convert to fraction form
    26,985.90/40,466.70 = 12,187.20/x
  3. Step 3: Cross multiply
    26,985.90x = 40,466.70 × 12,187.20
  4. Step 4: Simplify right side
    26,985.90x = 493,175,766.24
  5. Step 5: Solve for x
    x = 493,175,766.24/26,985.90
  6. Step 6: Final answer
    x = 18,275.31

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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.