Home / 20,439.90-30,667.41-8,762.22

Finding the Fourth Proportional to 20,439.90, 30,667.41 and 8,762.22

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Solution

The fourth proportional to 20,439.90, 30,667.41 and 8,762.22 is: 13,146.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.90 : 30,667.41 = 8,762.22 : x
  2. Step 2: Convert to fraction form
    20,439.90/30,667.41 = 8,762.22/x
  3. Step 3: Cross multiply
    20,439.90x = 30,667.41 × 8,762.22
  4. Step 4: Simplify right side
    20,439.90x = 268,714,593.25
  5. Step 5: Solve for x
    x = 268,714,593.25/20,439.90
  6. Step 6: Final answer
    x = 13,146.57

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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.