Home / 12,122.74-18,154.95-6,912.82

Finding the Fourth Proportional to 12,122.74, 18,154.95 and 6,912.82

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Solution

The fourth proportional to 12,122.74, 18,154.95 and 6,912.82 is: 10,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.74 : 18,154.95 = 6,912.82 : x
  2. Step 2: Convert to fraction form
    12,122.74/18,154.95 = 6,912.82/x
  3. Step 3: Cross multiply
    12,122.74x = 18,154.95 × 6,912.82
  4. Step 4: Simplify right side
    12,122.74x = 125,501,901.46
  5. Step 5: Solve for x
    x = 125,501,901.46/12,122.74
  6. Step 6: Final answer
    x = 10,352.60

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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.