Home / 20,934.36-28,889.22-11,373.96

Finding the Fourth Proportional to 20,934.36, 28,889.22 and 11,373.96

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Solution

The fourth proportional to 20,934.36, 28,889.22 and 11,373.96 is: 15,695.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.36 : 28,889.22 = 11,373.96 : x
  2. Step 2: Convert to fraction form
    20,934.36/28,889.22 = 11,373.96/x
  3. Step 3: Cross multiply
    20,934.36x = 28,889.22 × 11,373.96
  4. Step 4: Simplify right side
    20,934.36x = 328,584,832.71
  5. Step 5: Solve for x
    x = 328,584,832.71/20,934.36
  6. Step 6: Final answer
    x = 15,695.96

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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.