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Finding the Fourth Proportional to 20,423.68, 30,635.52 and 6,573.76

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Solution

The fourth proportional to 20,423.68, 30,635.52 and 6,573.76 is: 9,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.68 : 30,635.52 = 6,573.76 : x
  2. Step 2: Convert to fraction form
    20,423.68/30,635.52 = 6,573.76/x
  3. Step 3: Cross multiply
    20,423.68x = 30,635.52 × 6,573.76
  4. Step 4: Simplify right side
    20,423.68x = 201,390,555.96
  5. Step 5: Solve for x
    x = 201,390,555.96/20,423.68
  6. Step 6: Final answer
    x = 9,860.64

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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.