Home / 15,417.88-21,276.71-8,344.35

Finding the Fourth Proportional to 15,417.88, 21,276.71 and 8,344.35

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Solution

The fourth proportional to 15,417.88, 21,276.71 and 8,344.35 is: 11,515.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.88 : 21,276.71 = 8,344.35 : x
  2. Step 2: Convert to fraction form
    15,417.88/21,276.71 = 8,344.35/x
  3. Step 3: Cross multiply
    15,417.88x = 21,276.71 × 8,344.35
  4. Step 4: Simplify right side
    15,417.88x = 177,540,304.66
  5. Step 5: Solve for x
    x = 177,540,304.66/15,417.88
  6. Step 6: Final answer
    x = 11,515.22

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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.