Home / 11,971.64-16,520.49-6,666.19

Finding the Fourth Proportional to 11,971.64, 16,520.49 and 6,666.19

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Solution

The fourth proportional to 11,971.64, 16,520.49 and 6,666.19 is: 9,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.64 : 16,520.49 = 6,666.19 : x
  2. Step 2: Convert to fraction form
    11,971.64/16,520.49 = 6,666.19/x
  3. Step 3: Cross multiply
    11,971.64x = 16,520.49 × 6,666.19
  4. Step 4: Simplify right side
    11,971.64x = 110,128,683.93
  5. Step 5: Solve for x
    x = 110,128,683.93/11,971.64
  6. Step 6: Final answer
    x = 9,199.13

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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.