Home / 13,719.25-18,933.38-7,750.77

Finding the Fourth Proportional to 13,719.25, 18,933.38 and 7,750.77

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Solution

The fourth proportional to 13,719.25, 18,933.38 and 7,750.77 is: 10,696.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.25 : 18,933.38 = 7,750.77 : x
  2. Step 2: Convert to fraction form
    13,719.25/18,933.38 = 7,750.77/x
  3. Step 3: Cross multiply
    13,719.25x = 18,933.38 × 7,750.77
  4. Step 4: Simplify right side
    13,719.25x = 146,748,273.70
  5. Step 5: Solve for x
    x = 146,748,273.70/13,719.25
  6. Step 6: Final answer
    x = 10,696.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.