Home / 27,731.96-38,270.04-15,156.80

Finding the Fourth Proportional to 27,731.96, 38,270.04 and 15,156.80

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Solution

The fourth proportional to 27,731.96, 38,270.04 and 15,156.80 is: 20,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.96 : 38,270.04 = 15,156.80 : x
  2. Step 2: Convert to fraction form
    27,731.96/38,270.04 = 15,156.80/x
  3. Step 3: Cross multiply
    27,731.96x = 38,270.04 × 15,156.80
  4. Step 4: Simplify right side
    27,731.96x = 580,051,342.27
  5. Step 5: Solve for x
    x = 580,051,342.27/27,731.96
  6. Step 6: Final answer
    x = 20,916.35

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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.