Home / 12,132.66-18,188.35-10,069.78

Finding the Fourth Proportional to 12,132.66, 18,188.35 and 10,069.78

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Solution

The fourth proportional to 12,132.66, 18,188.35 and 10,069.78 is: 15,095.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.66 : 18,188.35 = 10,069.78 : x
  2. Step 2: Convert to fraction form
    12,132.66/18,188.35 = 10,069.78/x
  3. Step 3: Cross multiply
    12,132.66x = 18,188.35 × 10,069.78
  4. Step 4: Simplify right side
    12,132.66x = 183,152,683.06
  5. Step 5: Solve for x
    x = 183,152,683.06/12,132.66
  6. Step 6: Final answer
    x = 15,095.84

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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.