Home / 27,875.66-38,469.57-15,938.99

Finding the Fourth Proportional to 27,875.66, 38,469.57 and 15,938.99

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Solution

The fourth proportional to 27,875.66, 38,469.57 and 15,938.99 is: 21,996.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,875.66 : 38,469.57 = 15,938.99 : x
  2. Step 2: Convert to fraction form
    27,875.66/38,469.57 = 15,938.99/x
  3. Step 3: Cross multiply
    27,875.66x = 38,469.57 × 15,938.99
  4. Step 4: Simplify right side
    27,875.66x = 613,166,091.53
  5. Step 5: Solve for x
    x = 613,166,091.53/27,875.66
  6. Step 6: Final answer
    x = 21,996.47

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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.