Home / 27,784.69-38,343.78-15,209.44

Finding the Fourth Proportional to 27,784.69, 38,343.78 and 15,209.44

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Solution

The fourth proportional to 27,784.69, 38,343.78 and 15,209.44 is: 20,989.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,784.69 : 38,343.78 = 15,209.44 : x
  2. Step 2: Convert to fraction form
    27,784.69/38,343.78 = 15,209.44/x
  3. Step 3: Cross multiply
    27,784.69x = 38,343.78 × 15,209.44
  4. Step 4: Simplify right side
    27,784.69x = 583,187,421.28
  5. Step 5: Solve for x
    x = 583,187,421.28/27,784.69
  6. Step 6: Final answer
    x = 20,989.52

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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.