Home / 11,990.16-16,545.36-6,885.72

Finding the Fourth Proportional to 11,990.16, 16,545.36 and 6,885.72

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Solution

The fourth proportional to 11,990.16, 16,545.36 and 6,885.72 is: 9,501.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.16 : 16,545.36 = 6,885.72 : x
  2. Step 2: Convert to fraction form
    11,990.16/16,545.36 = 6,885.72/x
  3. Step 3: Cross multiply
    11,990.16x = 16,545.36 × 6,885.72
  4. Step 4: Simplify right side
    11,990.16x = 113,926,716.26
  5. Step 5: Solve for x
    x = 113,926,716.26/11,990.16
  6. Step 6: Final answer
    x = 9,501.68

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Double scale
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Similar ratio
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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.