Home / 28,222.86-38,945.40-15,474

Finding the Fourth Proportional to 28,222.86, 38,945.40 and 15,474

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Solution

The fourth proportional to 28,222.86, 38,945.40 and 15,474 is: 21,352.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.86 : 38,945.40 = 15,474 : x
  2. Step 2: Convert to fraction form
    28,222.86/38,945.40 = 15,474/x
  3. Step 3: Cross multiply
    28,222.86x = 38,945.40 × 15,474
  4. Step 4: Simplify right side
    28,222.86x = 602,641,119.60
  5. Step 5: Solve for x
    x = 602,641,119.60/28,222.86
  6. Step 6: Final answer
    x = 21,352.94

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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.