Home / 10,555.40-15,825.27-6,394.61

Finding the Fourth Proportional to 10,555.40, 15,825.27 and 6,394.61

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Solution

The fourth proportional to 10,555.40, 15,825.27 and 6,394.61 is: 9,587.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.40 : 15,825.27 = 6,394.61 : x
  2. Step 2: Convert to fraction form
    10,555.40/15,825.27 = 6,394.61/x
  3. Step 3: Cross multiply
    10,555.40x = 15,825.27 × 6,394.61
  4. Step 4: Simplify right side
    10,555.40x = 101,196,429.79
  5. Step 5: Solve for x
    x = 101,196,429.79/10,555.40
  6. Step 6: Final answer
    x = 9,587.17

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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.