Home / 18,345.74-25,319.54-10,388.25

Finding the Fourth Proportional to 18,345.74, 25,319.54 and 10,388.25

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Solution

The fourth proportional to 18,345.74, 25,319.54 and 10,388.25 is: 14,337.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.74 : 25,319.54 = 10,388.25 : x
  2. Step 2: Convert to fraction form
    18,345.74/25,319.54 = 10,388.25/x
  3. Step 3: Cross multiply
    18,345.74x = 25,319.54 × 10,388.25
  4. Step 4: Simplify right side
    18,345.74x = 263,025,678.94
  5. Step 5: Solve for x
    x = 263,025,678.94/18,345.74
  6. Step 6: Final answer
    x = 14,337.15

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Double scale
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Similar ratio
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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.