Home / 11,972.31-17,950.95-8,688.15

Finding the Fourth Proportional to 11,972.31, 17,950.95 and 8,688.15

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Solution

The fourth proportional to 11,972.31, 17,950.95 and 8,688.15 is: 13,026.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.31 : 17,950.95 = 8,688.15 : x
  2. Step 2: Convert to fraction form
    11,972.31/17,950.95 = 8,688.15/x
  3. Step 3: Cross multiply
    11,972.31x = 17,950.95 × 8,688.15
  4. Step 4: Simplify right side
    11,972.31x = 155,960,546.24
  5. Step 5: Solve for x
    x = 155,960,546.24/11,972.31
  6. Step 6: Final answer
    x = 13,026.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.