Home / 13,361.28-18,432.30-8,647.08

Finding the Fourth Proportional to 13,361.28, 18,432.30 and 8,647.08

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Solution

The fourth proportional to 13,361.28, 18,432.30 and 8,647.08 is: 11,928.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.28 : 18,432.30 = 8,647.08 : x
  2. Step 2: Convert to fraction form
    13,361.28/18,432.30 = 8,647.08/x
  3. Step 3: Cross multiply
    13,361.28x = 18,432.30 × 8,647.08
  4. Step 4: Simplify right side
    13,361.28x = 159,385,572.68
  5. Step 5: Solve for x
    x = 159,385,572.68/13,361.28
  6. Step 6: Final answer
    x = 11,928.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.