Home / 11,742.78-16,205.08-6,437.68

Finding the Fourth Proportional to 11,742.78, 16,205.08 and 6,437.68

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Solution

The fourth proportional to 11,742.78, 16,205.08 and 6,437.68 is: 8,884.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,742.78 : 16,205.08 = 6,437.68 : x
  2. Step 2: Convert to fraction form
    11,742.78/16,205.08 = 6,437.68/x
  3. Step 3: Cross multiply
    11,742.78x = 16,205.08 × 6,437.68
  4. Step 4: Simplify right side
    11,742.78x = 104,323,119.41
  5. Step 5: Solve for x
    x = 104,323,119.41/11,742.78
  6. Step 6: Final answer
    x = 8,884.02

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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.