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Finding the Fourth Proportional to 20,632.16, 30,943.56 and 8,148.08

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Solution

The fourth proportional to 20,632.16, 30,943.56 and 8,148.08 is: 12,220.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.16 : 30,943.56 = 8,148.08 : x
  2. Step 2: Convert to fraction form
    20,632.16/30,943.56 = 8,148.08/x
  3. Step 3: Cross multiply
    20,632.16x = 30,943.56 × 8,148.08
  4. Step 4: Simplify right side
    20,632.16x = 252,130,602.36
  5. Step 5: Solve for x
    x = 252,130,602.36/20,632.16
  6. Step 6: Final answer
    x = 12,220.27

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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.