Home / 11,712.72-16,169-6,931.16

Finding the Fourth Proportional to 11,712.72, 16,169 and 6,931.16

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Solution

The fourth proportional to 11,712.72, 16,169 and 6,931.16 is: 9,568.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.72 : 16,169 = 6,931.16 : x
  2. Step 2: Convert to fraction form
    11,712.72/16,169 = 6,931.16/x
  3. Step 3: Cross multiply
    11,712.72x = 16,169 × 6,931.16
  4. Step 4: Simplify right side
    11,712.72x = 112,069,926.04
  5. Step 5: Solve for x
    x = 112,069,926.04/11,712.72
  6. Step 6: Final answer
    x = 9,568.22

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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.