Home / 40,289.20-60,433.81-12,587.20

Finding the Fourth Proportional to 40,289.20, 60,433.81 and 12,587.20

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Solution

The fourth proportional to 40,289.20, 60,433.81 and 12,587.20 is: 18,880.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,289.20 : 60,433.81 = 12,587.20 : x
  2. Step 2: Convert to fraction form
    40,289.20/60,433.81 = 12,587.20/x
  3. Step 3: Cross multiply
    40,289.20x = 60,433.81 × 12,587.20
  4. Step 4: Simplify right side
    40,289.20x = 760,692,610.62
  5. Step 5: Solve for x
    x = 760,692,610.62/40,289.20
  6. Step 6: Final answer
    x = 18,880.81

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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.