Home / 27,278.15-37,638.20-15,945.45

Finding the Fourth Proportional to 27,278.15, 37,638.20 and 15,945.45

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Solution

The fourth proportional to 27,278.15, 37,638.20 and 15,945.45 is: 22,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,278.15 : 37,638.20 = 15,945.45 : x
  2. Step 2: Convert to fraction form
    27,278.15/37,638.20 = 15,945.45/x
  3. Step 3: Cross multiply
    27,278.15x = 37,638.20 × 15,945.45
  4. Step 4: Simplify right side
    27,278.15x = 600,157,916.98
  5. Step 5: Solve for x
    x = 600,157,916.98/27,278.15
  6. Step 6: Final answer
    x = 22,001.42

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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.