Home / 10,656.72-15,988.41-4,419.68

Finding the Fourth Proportional to 10,656.72, 15,988.41 and 4,419.68

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Solution

The fourth proportional to 10,656.72, 15,988.41 and 4,419.68 is: 6,630.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.72 : 15,988.41 = 4,419.68 : x
  2. Step 2: Convert to fraction form
    10,656.72/15,988.41 = 4,419.68/x
  3. Step 3: Cross multiply
    10,656.72x = 15,988.41 × 4,419.68
  4. Step 4: Simplify right side
    10,656.72x = 70,663,575.97
  5. Step 5: Solve for x
    x = 70,663,575.97/10,656.72
  6. Step 6: Final answer
    x = 6,630.89

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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.