Home / 10,621.80-15,927.90-4,775.40

Finding the Fourth Proportional to 10,621.80, 15,927.90 and 4,775.40

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Solution

The fourth proportional to 10,621.80, 15,927.90 and 4,775.40 is: 7,160.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.80 : 15,927.90 = 4,775.40 : x
  2. Step 2: Convert to fraction form
    10,621.80/15,927.90 = 4,775.40/x
  3. Step 3: Cross multiply
    10,621.80x = 15,927.90 × 4,775.40
  4. Step 4: Simplify right side
    10,621.80x = 76,062,093.66
  5. Step 5: Solve for x
    x = 76,062,093.66/10,621.80
  6. Step 6: Final answer
    x = 7,160.94

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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.