Home / 9,669.70-13,342.99-5,420.41

Finding the Fourth Proportional to 9,669.70, 13,342.99 and 5,420.41

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Solution

The fourth proportional to 9,669.70, 13,342.99 and 5,420.41 is: 7,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,669.70 : 13,342.99 = 5,420.41 : x
  2. Step 2: Convert to fraction form
    9,669.70/13,342.99 = 5,420.41/x
  3. Step 3: Cross multiply
    9,669.70x = 13,342.99 × 5,420.41
  4. Step 4: Simplify right side
    9,669.70x = 72,324,476.43
  5. Step 5: Solve for x
    x = 72,324,476.43/9,669.70
  6. Step 6: Final answer
    x = 7,479.50

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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.