Home / 15,553.68-21,455.40-10,776.42

Finding the Fourth Proportional to 15,553.68, 21,455.40 and 10,776.42

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Solution

The fourth proportional to 15,553.68, 21,455.40 and 10,776.42 is: 14,865.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.68 : 21,455.40 = 10,776.42 : x
  2. Step 2: Convert to fraction form
    15,553.68/21,455.40 = 10,776.42/x
  3. Step 3: Cross multiply
    15,553.68x = 21,455.40 × 10,776.42
  4. Step 4: Simplify right side
    15,553.68x = 231,212,401.67
  5. Step 5: Solve for x
    x = 231,212,401.67/15,553.68
  6. Step 6: Final answer
    x = 14,865.45

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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.