Home / 13,900.38-19,182.34-7,612.76

Finding the Fourth Proportional to 13,900.38, 19,182.34 and 7,612.76

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Solution

The fourth proportional to 13,900.38, 19,182.34 and 7,612.76 is: 10,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.38 : 19,182.34 = 7,612.76 : x
  2. Step 2: Convert to fraction form
    13,900.38/19,182.34 = 7,612.76/x
  3. Step 3: Cross multiply
    13,900.38x = 19,182.34 × 7,612.76
  4. Step 4: Simplify right side
    13,900.38x = 146,030,550.66
  5. Step 5: Solve for x
    x = 146,030,550.66/13,900.38
  6. Step 6: Final answer
    x = 10,505.51

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Half scale
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Double scale
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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.