Home / 21,533.42-29,717.78-12,919.93

Finding the Fourth Proportional to 21,533.42, 29,717.78 and 12,919.93

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Solution

The fourth proportional to 21,533.42, 29,717.78 and 12,919.93 is: 17,830.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.42 : 29,717.78 = 12,919.93 : x
  2. Step 2: Convert to fraction form
    21,533.42/29,717.78 = 12,919.93/x
  3. Step 3: Cross multiply
    21,533.42x = 29,717.78 × 12,919.93
  4. Step 4: Simplify right side
    21,533.42x = 383,951,521.07
  5. Step 5: Solve for x
    x = 383,951,521.07/21,533.42
  6. Step 6: Final answer
    x = 17,830.49

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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.