Home / 15,474.99-21,355.16-8,401.35

Finding the Fourth Proportional to 15,474.99, 21,355.16 and 8,401.35

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Solution

The fourth proportional to 15,474.99, 21,355.16 and 8,401.35 is: 11,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.99 : 21,355.16 = 8,401.35 : x
  2. Step 2: Convert to fraction form
    15,474.99/21,355.16 = 8,401.35/x
  3. Step 3: Cross multiply
    15,474.99x = 21,355.16 × 8,401.35
  4. Step 4: Simplify right side
    15,474.99x = 179,412,131.46
  5. Step 5: Solve for x
    x = 179,412,131.46/15,474.99
  6. Step 6: Final answer
    x = 11,593.68

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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.