Home / 11,971.77-16,520.54-6,666.45

Finding the Fourth Proportional to 11,971.77, 16,520.54 and 6,666.45

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Solution

The fourth proportional to 11,971.77, 16,520.54 and 6,666.45 is: 9,199.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.77 : 16,520.54 = 6,666.45 : x
  2. Step 2: Convert to fraction form
    11,971.77/16,520.54 = 6,666.45/x
  3. Step 3: Cross multiply
    11,971.77x = 16,520.54 × 6,666.45
  4. Step 4: Simplify right side
    11,971.77x = 110,133,320.55
  5. Step 5: Solve for x
    x = 110,133,320.55/11,971.77
  6. Step 6: Final answer
    x = 9,199.42

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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.