Home / 13,219.19-18,243.01-7,251.07

Finding the Fourth Proportional to 13,219.19, 18,243.01 and 7,251.07

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Solution

The fourth proportional to 13,219.19, 18,243.01 and 7,251.07 is: 10,006.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.19 : 18,243.01 = 7,251.07 : x
  2. Step 2: Convert to fraction form
    13,219.19/18,243.01 = 7,251.07/x
  3. Step 3: Cross multiply
    13,219.19x = 18,243.01 × 7,251.07
  4. Step 4: Simplify right side
    13,219.19x = 132,281,342.52
  5. Step 5: Solve for x
    x = 132,281,342.52/13,219.19
  6. Step 6: Final answer
    x = 10,006.77

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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.