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Finding the Fourth Proportional to 20,323.61, 30,485.21 and 5,532.30

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Solution

The fourth proportional to 20,323.61, 30,485.21 and 5,532.30 is: 8,298.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,323.61 : 30,485.21 = 5,532.30 : x
  2. Step 2: Convert to fraction form
    20,323.61/30,485.21 = 5,532.30/x
  3. Step 3: Cross multiply
    20,323.61x = 30,485.21 × 5,532.30
  4. Step 4: Simplify right side
    20,323.61x = 168,653,330.74
  5. Step 5: Solve for x
    x = 168,653,330.74/20,323.61
  6. Step 6: Final answer
    x = 8,298.39

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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.