Home / 11,743.28-16,206.40-6,438.32

Finding the Fourth Proportional to 11,743.28, 16,206.40 and 6,438.32

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Solution

The fourth proportional to 11,743.28, 16,206.40 and 6,438.32 is: 8,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,743.28 : 16,206.40 = 6,438.32 : x
  2. Step 2: Convert to fraction form
    11,743.28/16,206.40 = 6,438.32/x
  3. Step 3: Cross multiply
    11,743.28x = 16,206.40 × 6,438.32
  4. Step 4: Simplify right side
    11,743.28x = 104,341,989.25
  5. Step 5: Solve for x
    x = 104,341,989.25/11,743.28
  6. Step 6: Final answer
    x = 8,885.25

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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.