Home / 27,631-38,130.78-15,055.75

Finding the Fourth Proportional to 27,631, 38,130.78 and 15,055.75

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Solution

The fourth proportional to 27,631, 38,130.78 and 15,055.75 is: 20,776.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631 : 38,130.78 = 15,055.75 : x
  2. Step 2: Convert to fraction form
    27,631/38,130.78 = 15,055.75/x
  3. Step 3: Cross multiply
    27,631x = 38,130.78 × 15,055.75
  4. Step 4: Simplify right side
    27,631x = 574,087,490.99
  5. Step 5: Solve for x
    x = 574,087,490.99/27,631
  6. Step 6: Final answer
    x = 20,776.94

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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.