Home / 19,905.72-27,470.64-10,953.91

Finding the Fourth Proportional to 19,905.72, 27,470.64 and 10,953.91

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Solution

The fourth proportional to 19,905.72, 27,470.64 and 10,953.91 is: 15,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.72 : 27,470.64 = 10,953.91 : x
  2. Step 2: Convert to fraction form
    19,905.72/27,470.64 = 10,953.91/x
  3. Step 3: Cross multiply
    19,905.72x = 27,470.64 × 10,953.91
  4. Step 4: Simplify right side
    19,905.72x = 300,910,918.20
  5. Step 5: Solve for x
    x = 300,910,918.20/19,905.72
  6. Step 6: Final answer
    x = 15,116.81

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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.