Home / 40,489.20-60,636.60-19,688.40

Finding the Fourth Proportional to 40,489.20, 60,636.60 and 19,688.40

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Solution

The fourth proportional to 40,489.20, 60,636.60 and 19,688.40 is: 29,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,489.20 : 60,636.60 = 19,688.40 : x
  2. Step 2: Convert to fraction form
    40,489.20/60,636.60 = 19,688.40/x
  3. Step 3: Cross multiply
    40,489.20x = 60,636.60 × 19,688.40
  4. Step 4: Simplify right side
    40,489.20x = 1,193,837,635.44
  5. Step 5: Solve for x
    x = 1,193,837,635.44/40,489.20
  6. Step 6: Final answer
    x = 29,485.34

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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.