Home / 11,971.99-16,521.33-6,666.76

Finding the Fourth Proportional to 11,971.99, 16,521.33 and 6,666.76

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Solution

The fourth proportional to 11,971.99, 16,521.33 and 6,666.76 is: 9,200.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.99 : 16,521.33 = 6,666.76 : x
  2. Step 2: Convert to fraction form
    11,971.99/16,521.33 = 6,666.76/x
  3. Step 3: Cross multiply
    11,971.99x = 16,521.33 × 6,666.76
  4. Step 4: Simplify right side
    11,971.99x = 110,143,741.99
  5. Step 5: Solve for x
    x = 110,143,741.99/11,971.99
  6. Step 6: Final answer
    x = 9,200.12

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Double scale
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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.