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Finding the Fourth Proportional to 15,902.94, 21,950.04 and 9,192.46

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Solution

The fourth proportional to 15,902.94, 21,950.04 and 9,192.46 is: 12,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.94 : 21,950.04 = 9,192.46 : x
  2. Step 2: Convert to fraction form
    15,902.94/21,950.04 = 9,192.46/x
  3. Step 3: Cross multiply
    15,902.94x = 21,950.04 × 9,192.46
  4. Step 4: Simplify right side
    15,902.94x = 201,774,864.70
  5. Step 5: Solve for x
    x = 201,774,864.70/15,902.94
  6. Step 6: Final answer
    x = 12,687.90

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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.