Home / 27,997.50-38,637.36-15,423.06

Finding the Fourth Proportional to 27,997.50, 38,637.36 and 15,423.06

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Solution

The fourth proportional to 27,997.50, 38,637.36 and 15,423.06 is: 21,284.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.50 : 38,637.36 = 15,423.06 : x
  2. Step 2: Convert to fraction form
    27,997.50/38,637.36 = 15,423.06/x
  3. Step 3: Cross multiply
    27,997.50x = 38,637.36 × 15,423.06
  4. Step 4: Simplify right side
    27,997.50x = 595,906,321.52
  5. Step 5: Solve for x
    x = 595,906,321.52/27,997.50
  6. Step 6: Final answer
    x = 21,284.27

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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.