Home / 15,495.75-21,387.78-9,211.77

Finding the Fourth Proportional to 15,495.75, 21,387.78 and 9,211.77

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Solution

The fourth proportional to 15,495.75, 21,387.78 and 9,211.77 is: 12,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,495.75 : 21,387.78 = 9,211.77 : x
  2. Step 2: Convert to fraction form
    15,495.75/21,387.78 = 9,211.77/x
  3. Step 3: Cross multiply
    15,495.75x = 21,387.78 × 9,211.77
  4. Step 4: Simplify right side
    15,495.75x = 197,019,310.17
  5. Step 5: Solve for x
    x = 197,019,310.17/15,495.75
  6. Step 6: Final answer
    x = 12,714.41

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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.