Home / 15,518.82-21,401.07-10,425.87

Finding the Fourth Proportional to 15,518.82, 21,401.07 and 10,425.87

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Solution

The fourth proportional to 15,518.82, 21,401.07 and 10,425.87 is: 14,377.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.82 : 21,401.07 = 10,425.87 : x
  2. Step 2: Convert to fraction form
    15,518.82/21,401.07 = 10,425.87/x
  3. Step 3: Cross multiply
    15,518.82x = 21,401.07 × 10,425.87
  4. Step 4: Simplify right side
    15,518.82x = 223,124,773.68
  5. Step 5: Solve for x
    x = 223,124,773.68/15,518.82
  6. Step 6: Final answer
    x = 14,377.69

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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.