Home / 15,418.71-21,277.76-8,704.26

Finding the Fourth Proportional to 15,418.71, 21,277.76 and 8,704.26

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Solution

The fourth proportional to 15,418.71, 21,277.76 and 8,704.26 is: 12,011.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.71 : 21,277.76 = 8,704.26 : x
  2. Step 2: Convert to fraction form
    15,418.71/21,277.76 = 8,704.26/x
  3. Step 3: Cross multiply
    15,418.71x = 21,277.76 × 8,704.26
  4. Step 4: Simplify right side
    15,418.71x = 185,207,111.74
  5. Step 5: Solve for x
    x = 185,207,111.74/15,418.71
  6. Step 6: Final answer
    x = 12,011.84

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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.