Home / 20,360.22-28,090.65-11,406.30

Finding the Fourth Proportional to 20,360.22, 28,090.65 and 11,406.30

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Solution

The fourth proportional to 20,360.22, 28,090.65 and 11,406.30 is: 15,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.22 : 28,090.65 = 11,406.30 : x
  2. Step 2: Convert to fraction form
    20,360.22/28,090.65 = 11,406.30/x
  3. Step 3: Cross multiply
    20,360.22x = 28,090.65 × 11,406.30
  4. Step 4: Simplify right side
    20,360.22x = 320,410,381.10
  5. Step 5: Solve for x
    x = 320,410,381.10/20,360.22
  6. Step 6: Final answer
    x = 15,737.08

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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.