Home / 10,661.56-15,985.50-4,425.88

Finding the Fourth Proportional to 10,661.56, 15,985.50 and 4,425.88

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Solution

The fourth proportional to 10,661.56, 15,985.50 and 4,425.88 is: 6,635.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.56 : 15,985.50 = 4,425.88 : x
  2. Step 2: Convert to fraction form
    10,661.56/15,985.50 = 4,425.88/x
  3. Step 3: Cross multiply
    10,661.56x = 15,985.50 × 4,425.88
  4. Step 4: Simplify right side
    10,661.56x = 70,749,904.74
  5. Step 5: Solve for x
    x = 70,749,904.74/10,661.56
  6. Step 6: Final answer
    x = 6,635.98

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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.