Home / 19,930.86-27,515.16-15,444.54

Finding the Fourth Proportional to 19,930.86, 27,515.16 and 15,444.54

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Solution

The fourth proportional to 19,930.86, 27,515.16 and 15,444.54 is: 21,321.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.86 : 27,515.16 = 15,444.54 : x
  2. Step 2: Convert to fraction form
    19,930.86/27,515.16 = 15,444.54/x
  3. Step 3: Cross multiply
    19,930.86x = 27,515.16 × 15,444.54
  4. Step 4: Simplify right side
    19,930.86x = 424,958,989.23
  5. Step 5: Solve for x
    x = 424,958,989.23/19,930.86
  6. Step 6: Final answer
    x = 21,321.66

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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.