Home / 11,688.12-16,132.78-6,972.60

Finding the Fourth Proportional to 11,688.12, 16,132.78 and 6,972.60

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Solution

The fourth proportional to 11,688.12, 16,132.78 and 6,972.60 is: 9,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.12 : 16,132.78 = 6,972.60 : x
  2. Step 2: Convert to fraction form
    11,688.12/16,132.78 = 6,972.60/x
  3. Step 3: Cross multiply
    11,688.12x = 16,132.78 × 6,972.60
  4. Step 4: Simplify right side
    11,688.12x = 112,487,421.83
  5. Step 5: Solve for x
    x = 112,487,421.83/11,688.12
  6. Step 6: Final answer
    x = 9,624.08

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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.