Home / 15,481.49-21,373.31-10,191.68

Finding the Fourth Proportional to 15,481.49, 21,373.31 and 10,191.68

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Solution

The fourth proportional to 15,481.49, 21,373.31 and 10,191.68 is: 14,070.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.49 : 21,373.31 = 10,191.68 : x
  2. Step 2: Convert to fraction form
    15,481.49/21,373.31 = 10,191.68/x
  3. Step 3: Cross multiply
    15,481.49x = 21,373.31 × 10,191.68
  4. Step 4: Simplify right side
    15,481.49x = 217,829,778.24
  5. Step 5: Solve for x
    x = 217,829,778.24/15,481.49
  6. Step 6: Final answer
    x = 14,070.34

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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.