Home / 11,981.98-16,536.76-6,947.78

Finding the Fourth Proportional to 11,981.98, 16,536.76 and 6,947.78

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Solution

The fourth proportional to 11,981.98, 16,536.76 and 6,947.78 is: 9,588.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.98 : 16,536.76 = 6,947.78 : x
  2. Step 2: Convert to fraction form
    11,981.98/16,536.76 = 6,947.78/x
  3. Step 3: Cross multiply
    11,981.98x = 16,536.76 × 6,947.78
  4. Step 4: Simplify right side
    11,981.98x = 114,893,670.34
  5. Step 5: Solve for x
    x = 114,893,670.34/11,981.98
  6. Step 6: Final answer
    x = 9,588.88

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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.