Home / 18,370.92-25,351.68-9,987.36

Finding the Fourth Proportional to 18,370.92, 25,351.68 and 9,987.36

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Solution

The fourth proportional to 18,370.92, 25,351.68 and 9,987.36 is: 13,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.92 : 25,351.68 = 9,987.36 : x
  2. Step 2: Convert to fraction form
    18,370.92/25,351.68 = 9,987.36/x
  3. Step 3: Cross multiply
    18,370.92x = 25,351.68 × 9,987.36
  4. Step 4: Simplify right side
    18,370.92x = 253,196,354.76
  5. Step 5: Solve for x
    x = 253,196,354.76/18,370.92
  6. Step 6: Final answer
    x = 13,782.45

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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.