Home / 11,972.16-16,513.95-7,938.99

Finding the Fourth Proportional to 11,972.16, 16,513.95 and 7,938.99

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Solution

The fourth proportional to 11,972.16, 16,513.95 and 7,938.99 is: 10,950.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.16 : 16,513.95 = 7,938.99 : x
  2. Step 2: Convert to fraction form
    11,972.16/16,513.95 = 7,938.99/x
  3. Step 3: Cross multiply
    11,972.16x = 16,513.95 × 7,938.99
  4. Step 4: Simplify right side
    11,972.16x = 131,104,083.91
  5. Step 5: Solve for x
    x = 131,104,083.91/11,972.16
  6. Step 6: Final answer
    x = 10,950.75

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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.