Home / 19,699.18-27,194.88-15,212.86

Finding the Fourth Proportional to 19,699.18, 27,194.88 and 15,212.86

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Solution

The fourth proportional to 19,699.18, 27,194.88 and 15,212.86 is: 21,001.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.18 : 27,194.88 = 15,212.86 : x
  2. Step 2: Convert to fraction form
    19,699.18/27,194.88 = 15,212.86/x
  3. Step 3: Cross multiply
    19,699.18x = 27,194.88 × 15,212.86
  4. Step 4: Simplify right side
    19,699.18x = 413,711,902.16
  5. Step 5: Solve for x
    x = 413,711,902.16/19,699.18
  6. Step 6: Final answer
    x = 21,001.48

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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.