Home / 12,112.18-18,160.95-7,898.56

Finding the Fourth Proportional to 12,112.18, 18,160.95 and 7,898.56

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Solution

The fourth proportional to 12,112.18, 18,160.95 and 7,898.56 is: 11,843.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.18 : 18,160.95 = 7,898.56 : x
  2. Step 2: Convert to fraction form
    12,112.18/18,160.95 = 7,898.56/x
  3. Step 3: Cross multiply
    12,112.18x = 18,160.95 × 7,898.56
  4. Step 4: Simplify right side
    12,112.18x = 143,445,353.23
  5. Step 5: Solve for x
    x = 143,445,353.23/12,112.18
  6. Step 6: Final answer
    x = 11,843.07

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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.