Home / 10,449.20-14,419.80-5,669.15

Finding the Fourth Proportional to 10,449.20, 14,419.80 and 5,669.15

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Solution

The fourth proportional to 10,449.20, 14,419.80 and 5,669.15 is: 7,823.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,449.20 : 14,419.80 = 5,669.15 : x
  2. Step 2: Convert to fraction form
    10,449.20/14,419.80 = 5,669.15/x
  3. Step 3: Cross multiply
    10,449.20x = 14,419.80 × 5,669.15
  4. Step 4: Simplify right side
    10,449.20x = 81,747,937.07
  5. Step 5: Solve for x
    x = 81,747,937.07/10,449.20
  6. Step 6: Final answer
    x = 7,823.37

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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.