Home / 15,934.62-21,988.74-9,966

Finding the Fourth Proportional to 15,934.62, 21,988.74 and 9,966

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Solution

The fourth proportional to 15,934.62, 21,988.74 and 9,966 is: 13,752.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.62 : 21,988.74 = 9,966 : x
  2. Step 2: Convert to fraction form
    15,934.62/21,988.74 = 9,966/x
  3. Step 3: Cross multiply
    15,934.62x = 21,988.74 × 9,966
  4. Step 4: Simplify right side
    15,934.62x = 219,139,782.84
  5. Step 5: Solve for x
    x = 219,139,782.84/15,934.62
  6. Step 6: Final answer
    x = 13,752.43

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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.