Home / 15,905.07-21,946.41-9,191.61

Finding the Fourth Proportional to 15,905.07, 21,946.41 and 9,191.61

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Solution

The fourth proportional to 15,905.07, 21,946.41 and 9,191.61 is: 12,682.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.07 : 21,946.41 = 9,191.61 : x
  2. Step 2: Convert to fraction form
    15,905.07/21,946.41 = 9,191.61/x
  3. Step 3: Cross multiply
    15,905.07x = 21,946.41 × 9,191.61
  4. Step 4: Simplify right side
    15,905.07x = 201,722,841.62
  5. Step 5: Solve for x
    x = 201,722,841.62/15,905.07
  6. Step 6: Final answer
    x = 12,682.93

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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.