Home / 13,612.41-20,404.20-7,756.47

Finding the Fourth Proportional to 13,612.41, 20,404.20 and 7,756.47

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Solution

The fourth proportional to 13,612.41, 20,404.20 and 7,756.47 is: 11,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.41 : 20,404.20 = 7,756.47 : x
  2. Step 2: Convert to fraction form
    13,612.41/20,404.20 = 7,756.47/x
  3. Step 3: Cross multiply
    13,612.41x = 20,404.20 × 7,756.47
  4. Step 4: Simplify right side
    13,612.41x = 158,264,565.17
  5. Step 5: Solve for x
    x = 158,264,565.17/13,612.41
  6. Step 6: Final answer
    x = 11,626.49

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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.