Home / 20,056.32-27,643.68-15,330.24

Finding the Fourth Proportional to 20,056.32, 27,643.68 and 15,330.24

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Solution

The fourth proportional to 20,056.32, 27,643.68 and 15,330.24 is: 21,129.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,056.32 : 27,643.68 = 15,330.24 : x
  2. Step 2: Convert to fraction form
    20,056.32/27,643.68 = 15,330.24/x
  3. Step 3: Cross multiply
    20,056.32x = 27,643.68 × 15,330.24
  4. Step 4: Simplify right side
    20,056.32x = 423,784,248.88
  5. Step 5: Solve for x
    x = 423,784,248.88/20,056.32
  6. Step 6: Final answer
    x = 21,129.71

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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.