Home / 19,905.24-27,469.52-11,407.72

Finding the Fourth Proportional to 19,905.24, 27,469.52 and 11,407.72

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Solution

The fourth proportional to 19,905.24, 27,469.52 and 11,407.72 is: 15,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.24 : 27,469.52 = 11,407.72 : x
  2. Step 2: Convert to fraction form
    19,905.24/27,469.52 = 11,407.72/x
  3. Step 3: Cross multiply
    19,905.24x = 27,469.52 × 11,407.72
  4. Step 4: Simplify right side
    19,905.24x = 313,364,592.69
  5. Step 5: Solve for x
    x = 313,364,592.69/19,905.24
  6. Step 6: Final answer
    x = 15,742.82

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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.