Home / 15,297.36-21,096.36-9,990.24

Finding the Fourth Proportional to 15,297.36, 21,096.36 and 9,990.24

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Solution

The fourth proportional to 15,297.36, 21,096.36 and 9,990.24 is: 13,777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.36 : 21,096.36 = 9,990.24 : x
  2. Step 2: Convert to fraction form
    15,297.36/21,096.36 = 9,990.24/x
  3. Step 3: Cross multiply
    15,297.36x = 21,096.36 × 9,990.24
  4. Step 4: Simplify right side
    15,297.36x = 210,757,699.53
  5. Step 5: Solve for x
    x = 210,757,699.53/15,297.36
  6. Step 6: Final answer
    x = 13,777.39

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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.