Home / 15,498.90-21,388.23-8,425.50

Finding the Fourth Proportional to 15,498.90, 21,388.23 and 8,425.50

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Solution

The fourth proportional to 15,498.90, 21,388.23 and 8,425.50 is: 11,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.90 : 21,388.23 = 8,425.50 : x
  2. Step 2: Convert to fraction form
    15,498.90/21,388.23 = 8,425.50/x
  3. Step 3: Cross multiply
    15,498.90x = 21,388.23 × 8,425.50
  4. Step 4: Simplify right side
    15,498.90x = 180,206,531.87
  5. Step 5: Solve for x
    x = 180,206,531.87/15,498.90
  6. Step 6: Final answer
    x = 11,627.05

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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.