Home / 19,905.45-27,470.66-10,953.17

Finding the Fourth Proportional to 19,905.45, 27,470.66 and 10,953.17

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Solution

The fourth proportional to 19,905.45, 27,470.66 and 10,953.17 is: 15,115.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.45 : 27,470.66 = 10,953.17 : x
  2. Step 2: Convert to fraction form
    19,905.45/27,470.66 = 10,953.17/x
  3. Step 3: Cross multiply
    19,905.45x = 27,470.66 × 10,953.17
  4. Step 4: Simplify right side
    19,905.45x = 300,890,616.87
  5. Step 5: Solve for x
    x = 300,890,616.87/19,905.45
  6. Step 6: Final answer
    x = 15,115.99

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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.