Home / 15,812.13-21,825.28-10,438.49

Finding the Fourth Proportional to 15,812.13, 21,825.28 and 10,438.49

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Solution

The fourth proportional to 15,812.13, 21,825.28 and 10,438.49 is: 14,408.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.13 : 21,825.28 = 10,438.49 : x
  2. Step 2: Convert to fraction form
    15,812.13/21,825.28 = 10,438.49/x
  3. Step 3: Cross multiply
    15,812.13x = 21,825.28 × 10,438.49
  4. Step 4: Simplify right side
    15,812.13x = 227,823,034.64
  5. Step 5: Solve for x
    x = 227,823,034.64/15,812.13
  6. Step 6: Final answer
    x = 14,408.11

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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.