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Finding the Fourth Proportional to 20,283.50, 30,425.25 and 6,432.50

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Solution

The fourth proportional to 20,283.50, 30,425.25 and 6,432.50 is: 9,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.50 : 30,425.25 = 6,432.50 : x
  2. Step 2: Convert to fraction form
    20,283.50/30,425.25 = 6,432.50/x
  3. Step 3: Cross multiply
    20,283.50x = 30,425.25 × 6,432.50
  4. Step 4: Simplify right side
    20,283.50x = 195,710,420.63
  5. Step 5: Solve for x
    x = 195,710,420.63/20,283.50
  6. Step 6: Final answer
    x = 9,648.75

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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.