Home / 20,662.47-28,514.07-11,709.90

Finding the Fourth Proportional to 20,662.47, 28,514.07 and 11,709.90

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Solution

The fourth proportional to 20,662.47, 28,514.07 and 11,709.90 is: 16,159.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.47 : 28,514.07 = 11,709.90 : x
  2. Step 2: Convert to fraction form
    20,662.47/28,514.07 = 11,709.90/x
  3. Step 3: Cross multiply
    20,662.47x = 28,514.07 × 11,709.90
  4. Step 4: Simplify right side
    20,662.47x = 333,896,908.29
  5. Step 5: Solve for x
    x = 333,896,908.29/20,662.47
  6. Step 6: Final answer
    x = 16,159.58

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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.