Home / 20,374.20-30,561.30-8,688.60

Finding the Fourth Proportional to 20,374.20, 30,561.30 and 8,688.60

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Solution

The fourth proportional to 20,374.20, 30,561.30 and 8,688.60 is: 13,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.20 : 30,561.30 = 8,688.60 : x
  2. Step 2: Convert to fraction form
    20,374.20/30,561.30 = 8,688.60/x
  3. Step 3: Cross multiply
    20,374.20x = 30,561.30 × 8,688.60
  4. Step 4: Simplify right side
    20,374.20x = 265,534,911.18
  5. Step 5: Solve for x
    x = 265,534,911.18/20,374.20
  6. Step 6: Final answer
    x = 13,032.90

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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.