Home / 11,302.40-16,921.20-6,928.40

Finding the Fourth Proportional to 11,302.40, 16,921.20 and 6,928.40

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Solution

The fourth proportional to 11,302.40, 16,921.20 and 6,928.40 is: 10,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,302.40 : 16,921.20 = 6,928.40 : x
  2. Step 2: Convert to fraction form
    11,302.40/16,921.20 = 6,928.40/x
  3. Step 3: Cross multiply
    11,302.40x = 16,921.20 × 6,928.40
  4. Step 4: Simplify right side
    11,302.40x = 117,236,842.08
  5. Step 5: Solve for x
    x = 117,236,842.08/11,302.40
  6. Step 6: Final answer
    x = 10,372.74

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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.