Home / 12,190.15-18,283.35-3,869.08

Finding the Fourth Proportional to 12,190.15, 18,283.35 and 3,869.08

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Solution

The fourth proportional to 12,190.15, 18,283.35 and 3,869.08 is: 5,803.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.15 : 18,283.35 = 3,869.08 : x
  2. Step 2: Convert to fraction form
    12,190.15/18,283.35 = 3,869.08/x
  3. Step 3: Cross multiply
    12,190.15x = 18,283.35 × 3,869.08
  4. Step 4: Simplify right side
    12,190.15x = 70,739,652.40
  5. Step 5: Solve for x
    x = 70,739,652.40/12,190.15
  6. Step 6: Final answer
    x = 5,803.02

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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.