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Finding the Fourth Proportional to 20,650.95, 30,959.01 and 8,955.36

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Solution

The fourth proportional to 20,650.95, 30,959.01 and 8,955.36 is: 13,425.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.95 : 30,959.01 = 8,955.36 : x
  2. Step 2: Convert to fraction form
    20,650.95/30,959.01 = 8,955.36/x
  3. Step 3: Cross multiply
    20,650.95x = 30,959.01 × 8,955.36
  4. Step 4: Simplify right side
    20,650.95x = 277,249,079.79
  5. Step 5: Solve for x
    x = 277,249,079.79/20,650.95
  6. Step 6: Final answer
    x = 13,425.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.