Home / 27,909.72-38,515.41-15,334.47

Finding the Fourth Proportional to 27,909.72, 38,515.41 and 15,334.47

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Solution

The fourth proportional to 27,909.72, 38,515.41 and 15,334.47 is: 21,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,909.72 : 38,515.41 = 15,334.47 : x
  2. Step 2: Convert to fraction form
    27,909.72/38,515.41 = 15,334.47/x
  3. Step 3: Cross multiply
    27,909.72x = 38,515.41 × 15,334.47
  4. Step 4: Simplify right side
    27,909.72x = 590,613,399.18
  5. Step 5: Solve for x
    x = 590,613,399.18/27,909.72
  6. Step 6: Final answer
    x = 21,161.57

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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.