Home / 20,359.24-28,095.72-11,406.81

Finding the Fourth Proportional to 20,359.24, 28,095.72 and 11,406.81

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Solution

The fourth proportional to 20,359.24, 28,095.72 and 11,406.81 is: 15,741.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.24 : 28,095.72 = 11,406.81 : x
  2. Step 2: Convert to fraction form
    20,359.24/28,095.72 = 11,406.81/x
  3. Step 3: Cross multiply
    20,359.24x = 28,095.72 × 11,406.81
  4. Step 4: Simplify right side
    20,359.24x = 320,482,399.37
  5. Step 5: Solve for x
    x = 320,482,399.37/20,359.24
  6. Step 6: Final answer
    x = 15,741.37

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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.