Home / 27,515.76-37,972.28-15,579.08

Finding the Fourth Proportional to 27,515.76, 37,972.28 and 15,579.08

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Solution

The fourth proportional to 27,515.76, 37,972.28 and 15,579.08 is: 21,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,515.76 : 37,972.28 = 15,579.08 : x
  2. Step 2: Convert to fraction form
    27,515.76/37,972.28 = 15,579.08/x
  3. Step 3: Cross multiply
    27,515.76x = 37,972.28 × 15,579.08
  4. Step 4: Simplify right side
    27,515.76x = 591,573,187.90
  5. Step 5: Solve for x
    x = 591,573,187.90/27,515.76
  6. Step 6: Final answer
    x = 21,499.43

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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.