Home / 22,476.83-31,019.45-12,919.78

Finding the Fourth Proportional to 22,476.83, 31,019.45 and 12,919.78

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Solution

The fourth proportional to 22,476.83, 31,019.45 and 12,919.78 is: 17,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,476.83 : 31,019.45 = 12,919.78 : x
  2. Step 2: Convert to fraction form
    22,476.83/31,019.45 = 12,919.78/x
  3. Step 3: Cross multiply
    22,476.83x = 31,019.45 × 12,919.78
  4. Step 4: Simplify right side
    22,476.83x = 400,764,327.57
  5. Step 5: Solve for x
    x = 400,764,327.57/22,476.83
  6. Step 6: Final answer
    x = 17,830.11

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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.