Home / 27,998.45-38,637.87-15,423.20

Finding the Fourth Proportional to 27,998.45, 38,637.87 and 15,423.20

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Solution

The fourth proportional to 27,998.45, 38,637.87 and 15,423.20 is: 21,284.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.45 : 38,637.87 = 15,423.20 : x
  2. Step 2: Convert to fraction form
    27,998.45/38,637.87 = 15,423.20/x
  3. Step 3: Cross multiply
    27,998.45x = 38,637.87 × 15,423.20
  4. Step 4: Simplify right side
    27,998.45x = 595,919,403.39
  5. Step 5: Solve for x
    x = 595,919,403.39/27,998.45
  6. Step 6: Final answer
    x = 21,284.02

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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.