Home / 15,489.96-21,387.24-9,529.64

Finding the Fourth Proportional to 15,489.96, 21,387.24 and 9,529.64

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Solution

The fourth proportional to 15,489.96, 21,387.24 and 9,529.64 is: 13,157.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.96 : 21,387.24 = 9,529.64 : x
  2. Step 2: Convert to fraction form
    15,489.96/21,387.24 = 9,529.64/x
  3. Step 3: Cross multiply
    15,489.96x = 21,387.24 × 9,529.64
  4. Step 4: Simplify right side
    15,489.96x = 203,812,697.79
  5. Step 5: Solve for x
    x = 203,812,697.79/15,489.96
  6. Step 6: Final answer
    x = 13,157.73

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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.