Home / 12,289.11-18,442.83-9,133.82

Finding the Fourth Proportional to 12,289.11, 18,442.83 and 9,133.82

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Solution

The fourth proportional to 12,289.11, 18,442.83 and 9,133.82 is: 13,707.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.11 : 18,442.83 = 9,133.82 : x
  2. Step 2: Convert to fraction form
    12,289.11/18,442.83 = 9,133.82/x
  3. Step 3: Cross multiply
    12,289.11x = 18,442.83 × 9,133.82
  4. Step 4: Simplify right side
    12,289.11x = 168,453,397.30
  5. Step 5: Solve for x
    x = 168,453,397.30/12,289.11
  6. Step 6: Final answer
    x = 13,707.53

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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.