Home / 10,113.68-15,178-5,187.44

Finding the Fourth Proportional to 10,113.68, 15,178 and 5,187.44

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Solution

The fourth proportional to 10,113.68, 15,178 and 5,187.44 is: 7,785.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,113.68 : 15,178 = 5,187.44 : x
  2. Step 2: Convert to fraction form
    10,113.68/15,178 = 5,187.44/x
  3. Step 3: Cross multiply
    10,113.68x = 15,178 × 5,187.44
  4. Step 4: Simplify right side
    10,113.68x = 78,734,964.32
  5. Step 5: Solve for x
    x = 78,734,964.32/10,113.68
  6. Step 6: Final answer
    x = 7,785.00

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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.