Home / 20,762.76-28,652.21-11,331.39

Finding the Fourth Proportional to 20,762.76, 28,652.21 and 11,331.39

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Solution

The fourth proportional to 20,762.76, 28,652.21 and 11,331.39 is: 15,637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.76 : 28,652.21 = 11,331.39 : x
  2. Step 2: Convert to fraction form
    20,762.76/28,652.21 = 11,331.39/x
  3. Step 3: Cross multiply
    20,762.76x = 28,652.21 × 11,331.39
  4. Step 4: Simplify right side
    20,762.76x = 324,669,522.89
  5. Step 5: Solve for x
    x = 324,669,522.89/20,762.76
  6. Step 6: Final answer
    x = 15,637.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.