Home / 10,434.39-15,651.69-2,643.21

Finding the Fourth Proportional to 10,434.39, 15,651.69 and 2,643.21

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Solution

The fourth proportional to 10,434.39, 15,651.69 and 2,643.21 is: 3,964.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,434.39 : 15,651.69 = 2,643.21 : x
  2. Step 2: Convert to fraction form
    10,434.39/15,651.69 = 2,643.21/x
  3. Step 3: Cross multiply
    10,434.39x = 15,651.69 × 2,643.21
  4. Step 4: Simplify right side
    10,434.39x = 41,370,703.52
  5. Step 5: Solve for x
    x = 41,370,703.52/10,434.39
  6. Step 6: Final answer
    x = 3,964.84

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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.