Home / 11,972.85-16,521.87-6,666.72

Finding the Fourth Proportional to 11,972.85, 16,521.87 and 6,666.72

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Solution

The fourth proportional to 11,972.85, 16,521.87 and 6,666.72 is: 9,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.85 : 16,521.87 = 6,666.72 : x
  2. Step 2: Convert to fraction form
    11,972.85/16,521.87 = 6,666.72/x
  3. Step 3: Cross multiply
    11,972.85x = 16,521.87 × 6,666.72
  4. Step 4: Simplify right side
    11,972.85x = 110,146,681.17
  5. Step 5: Solve for x
    x = 110,146,681.17/11,972.85
  6. Step 6: Final answer
    x = 9,199.70

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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.