Home / 10,085.02-15,121.96-4,821.35

Finding the Fourth Proportional to 10,085.02, 15,121.96 and 4,821.35

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Solution

The fourth proportional to 10,085.02, 15,121.96 and 4,821.35 is: 7,229.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.02 : 15,121.96 = 4,821.35 : x
  2. Step 2: Convert to fraction form
    10,085.02/15,121.96 = 4,821.35/x
  3. Step 3: Cross multiply
    10,085.02x = 15,121.96 × 4,821.35
  4. Step 4: Simplify right side
    10,085.02x = 72,908,261.85
  5. Step 5: Solve for x
    x = 72,908,261.85/10,085.02
  6. Step 6: Final answer
    x = 7,229.36

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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.