Home / 20,374.72-30,563.70-8,688.04

Finding the Fourth Proportional to 20,374.72, 30,563.70 and 8,688.04

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Solution

The fourth proportional to 20,374.72, 30,563.70 and 8,688.04 is: 13,032.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.72 : 30,563.70 = 8,688.04 : x
  2. Step 2: Convert to fraction form
    20,374.72/30,563.70 = 8,688.04/x
  3. Step 3: Cross multiply
    20,374.72x = 30,563.70 × 8,688.04
  4. Step 4: Simplify right side
    20,374.72x = 265,538,648.15
  5. Step 5: Solve for x
    x = 265,538,648.15/20,374.72
  6. Step 6: Final answer
    x = 13,032.75

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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.