Home / 10,221.95-15,334.70-3,985.35

Finding the Fourth Proportional to 10,221.95, 15,334.70 and 3,985.35

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Solution

The fourth proportional to 10,221.95, 15,334.70 and 3,985.35 is: 5,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.95 : 15,334.70 = 3,985.35 : x
  2. Step 2: Convert to fraction form
    10,221.95/15,334.70 = 3,985.35/x
  3. Step 3: Cross multiply
    10,221.95x = 15,334.70 × 3,985.35
  4. Step 4: Simplify right side
    10,221.95x = 61,114,126.72
  5. Step 5: Solve for x
    x = 61,114,126.72/10,221.95
  6. Step 6: Final answer
    x = 5,978.72

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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.