Home / 15,001.29-20,699.64-8,540.37

Finding the Fourth Proportional to 15,001.29, 20,699.64 and 8,540.37

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Solution

The fourth proportional to 15,001.29, 20,699.64 and 8,540.37 is: 11,784.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.29 : 20,699.64 = 8,540.37 : x
  2. Step 2: Convert to fraction form
    15,001.29/20,699.64 = 8,540.37/x
  3. Step 3: Cross multiply
    15,001.29x = 20,699.64 × 8,540.37
  4. Step 4: Simplify right side
    15,001.29x = 176,782,584.47
  5. Step 5: Solve for x
    x = 176,782,584.47/15,001.29
  6. Step 6: Final answer
    x = 11,784.49

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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.