Home / 18,370.12-25,351.14-9,987.16

Finding the Fourth Proportional to 18,370.12, 25,351.14 and 9,987.16

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Solution

The fourth proportional to 18,370.12, 25,351.14 and 9,987.16 is: 13,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.12 : 25,351.14 = 9,987.16 : x
  2. Step 2: Convert to fraction form
    18,370.12/25,351.14 = 9,987.16/x
  3. Step 3: Cross multiply
    18,370.12x = 25,351.14 × 9,987.16
  4. Step 4: Simplify right side
    18,370.12x = 253,185,891.36
  5. Step 5: Solve for x
    x = 253,185,891.36/18,370.12
  6. Step 6: Final answer
    x = 13,782.48

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Half scale
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Double scale
Find fourth proportional to 18,371.12, 25,352.52 and 9,988.16
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.