Home / 20,359.13-28,094.67-11,406.56

Finding the Fourth Proportional to 20,359.13, 28,094.67 and 11,406.56

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Solution

The fourth proportional to 20,359.13, 28,094.67 and 11,406.56 is: 15,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.13 : 28,094.67 = 11,406.56 : x
  2. Step 2: Convert to fraction form
    20,359.13/28,094.67 = 11,406.56/x
  3. Step 3: Cross multiply
    20,359.13x = 28,094.67 × 11,406.56
  4. Step 4: Simplify right side
    20,359.13x = 320,463,398.56
  5. Step 5: Solve for x
    x = 320,463,398.56/20,359.13
  6. Step 6: Final answer
    x = 15,740.53

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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.