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Finding the Fourth Proportional to 10,720.41, 14,788.13 and 7,571.13

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Solution

The fourth proportional to 10,720.41, 14,788.13 and 7,571.13 is: 10,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.41 : 14,788.13 = 7,571.13 : x
  2. Step 2: Convert to fraction form
    10,720.41/14,788.13 = 7,571.13/x
  3. Step 3: Cross multiply
    10,720.41x = 14,788.13 × 7,571.13
  4. Step 4: Simplify right side
    10,720.41x = 111,962,854.69
  5. Step 5: Solve for x
    x = 111,962,854.69/10,720.41
  6. Step 6: Final answer
    x = 10,443.90

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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.