Home / 20,597.78-28,426.71-11,646.87

Finding the Fourth Proportional to 20,597.78, 28,426.71 and 11,646.87

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Solution

The fourth proportional to 20,597.78, 28,426.71 and 11,646.87 is: 16,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.78 : 28,426.71 = 11,646.87 : x
  2. Step 2: Convert to fraction form
    20,597.78/28,426.71 = 11,646.87/x
  3. Step 3: Cross multiply
    20,597.78x = 28,426.71 × 11,646.87
  4. Step 4: Simplify right side
    20,597.78x = 331,082,195.90
  5. Step 5: Solve for x
    x = 331,082,195.90/20,597.78
  6. Step 6: Final answer
    x = 16,073.69

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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.