Home / 27,909.75-38,515.47-15,335.31

Finding the Fourth Proportional to 27,909.75, 38,515.47 and 15,335.31

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Solution

The fourth proportional to 27,909.75, 38,515.47 and 15,335.31 is: 21,162.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,909.75 : 38,515.47 = 15,335.31 : x
  2. Step 2: Convert to fraction form
    27,909.75/38,515.47 = 15,335.31/x
  3. Step 3: Cross multiply
    27,909.75x = 38,515.47 × 15,335.31
  4. Step 4: Simplify right side
    27,909.75x = 590,646,672.25
  5. Step 5: Solve for x
    x = 590,646,672.25/27,909.75
  6. Step 6: Final answer
    x = 21,162.74

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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.