Home / 15,330.42-21,157.73-8,525.12

Finding the Fourth Proportional to 15,330.42, 21,157.73 and 8,525.12

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Solution

The fourth proportional to 15,330.42, 21,157.73 and 8,525.12 is: 11,765.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.42 : 21,157.73 = 8,525.12 : x
  2. Step 2: Convert to fraction form
    15,330.42/21,157.73 = 8,525.12/x
  3. Step 3: Cross multiply
    15,330.42x = 21,157.73 × 8,525.12
  4. Step 4: Simplify right side
    15,330.42x = 180,372,182.04
  5. Step 5: Solve for x
    x = 180,372,182.04/15,330.42
  6. Step 6: Final answer
    x = 11,765.64

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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.