Home / 21,154.08-31,672.72-15,944.16

Finding the Fourth Proportional to 21,154.08, 31,672.72 and 15,944.16

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Solution

The fourth proportional to 21,154.08, 31,672.72 and 15,944.16 is: 23,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.08 : 31,672.72 = 15,944.16 : x
  2. Step 2: Convert to fraction form
    21,154.08/31,672.72 = 15,944.16/x
  3. Step 3: Cross multiply
    21,154.08x = 31,672.72 × 15,944.16
  4. Step 4: Simplify right side
    21,154.08x = 504,994,915.32
  5. Step 5: Solve for x
    x = 504,994,915.32/21,154.08
  6. Step 6: Final answer
    x = 23,872.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.