Home / 20,359.34-28,095.74-11,406.92

Finding the Fourth Proportional to 20,359.34, 28,095.74 and 11,406.92

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Solution

The fourth proportional to 20,359.34, 28,095.74 and 11,406.92 is: 15,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.34 : 28,095.74 = 11,406.92 : x
  2. Step 2: Convert to fraction form
    20,359.34/28,095.74 = 11,406.92/x
  3. Step 3: Cross multiply
    20,359.34x = 28,095.74 × 11,406.92
  4. Step 4: Simplify right side
    20,359.34x = 320,485,858.52
  5. Step 5: Solve for x
    x = 320,485,858.52/20,359.34
  6. Step 6: Final answer
    x = 15,741.47

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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.