Home / 10,120.23-15,190.05-4,929.75

Finding the Fourth Proportional to 10,120.23, 15,190.05 and 4,929.75

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Solution

The fourth proportional to 10,120.23, 15,190.05 and 4,929.75 is: 7,399.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.23 : 15,190.05 = 4,929.75 : x
  2. Step 2: Convert to fraction form
    10,120.23/15,190.05 = 4,929.75/x
  3. Step 3: Cross multiply
    10,120.23x = 15,190.05 × 4,929.75
  4. Step 4: Simplify right side
    10,120.23x = 74,883,148.99
  5. Step 5: Solve for x
    x = 74,883,148.99/10,120.23
  6. Step 6: Final answer
    x = 7,399.35

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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.