Home / 13,612.59-20,420.28-3,751.86

Finding the Fourth Proportional to 13,612.59, 20,420.28 and 3,751.86

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Solution

The fourth proportional to 13,612.59, 20,420.28 and 3,751.86 is: 5,628.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.59 : 20,420.28 = 3,751.86 : x
  2. Step 2: Convert to fraction form
    13,612.59/20,420.28 = 3,751.86/x
  3. Step 3: Cross multiply
    13,612.59x = 20,420.28 × 3,751.86
  4. Step 4: Simplify right side
    13,612.59x = 76,614,031.72
  5. Step 5: Solve for x
    x = 76,614,031.72/13,612.59
  6. Step 6: Final answer
    x = 5,628.17

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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.