Home / 10,421.84-15,634.40-3,400.24

Finding the Fourth Proportional to 10,421.84, 15,634.40 and 3,400.24

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Solution

The fourth proportional to 10,421.84, 15,634.40 and 3,400.24 is: 5,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.84 : 15,634.40 = 3,400.24 : x
  2. Step 2: Convert to fraction form
    10,421.84/15,634.40 = 3,400.24/x
  3. Step 3: Cross multiply
    10,421.84x = 15,634.40 × 3,400.24
  4. Step 4: Simplify right side
    10,421.84x = 53,160,639.61
  5. Step 5: Solve for x
    x = 53,160,639.61/10,421.84
  6. Step 6: Final answer
    x = 5,100.89

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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.