Home / 10,440.28-15,660.01-3,420.82

Finding the Fourth Proportional to 10,440.28, 15,660.01 and 3,420.82

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Solution

The fourth proportional to 10,440.28, 15,660.01 and 3,420.82 is: 5,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.28 : 15,660.01 = 3,420.82 : x
  2. Step 2: Convert to fraction form
    10,440.28/15,660.01 = 3,420.82/x
  3. Step 3: Cross multiply
    10,440.28x = 15,660.01 × 3,420.82
  4. Step 4: Simplify right side
    10,440.28x = 53,570,075.41
  5. Step 5: Solve for x
    x = 53,570,075.41/10,440.28
  6. Step 6: Final answer
    x = 5,131.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.