Home / 12,228.22-18,339.90-5,985.55

Finding the Fourth Proportional to 12,228.22, 18,339.90 and 5,985.55

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Solution

The fourth proportional to 12,228.22, 18,339.90 and 5,985.55 is: 8,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.22 : 18,339.90 = 5,985.55 : x
  2. Step 2: Convert to fraction form
    12,228.22/18,339.90 = 5,985.55/x
  3. Step 3: Cross multiply
    12,228.22x = 18,339.90 × 5,985.55
  4. Step 4: Simplify right side
    12,228.22x = 109,774,388.45
  5. Step 5: Solve for x
    x = 109,774,388.45/12,228.22
  6. Step 6: Final answer
    x = 8,977.14

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1.5x scale

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.