Home / 15,748.71-21,733.26-8,578.68

Finding the Fourth Proportional to 15,748.71, 21,733.26 and 8,578.68

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Solution

The fourth proportional to 15,748.71, 21,733.26 and 8,578.68 is: 11,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.71 : 21,733.26 = 8,578.68 : x
  2. Step 2: Convert to fraction form
    15,748.71/21,733.26 = 8,578.68/x
  3. Step 3: Cross multiply
    15,748.71x = 21,733.26 × 8,578.68
  4. Step 4: Simplify right side
    15,748.71x = 186,442,682.90
  5. Step 5: Solve for x
    x = 186,442,682.90/15,748.71
  6. Step 6: Final answer
    x = 11,838.60

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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.