Home / 22,342.74-30,824.40-12,780.69

Finding the Fourth Proportional to 22,342.74, 30,824.40 and 12,780.69

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Solution

The fourth proportional to 22,342.74, 30,824.40 and 12,780.69 is: 17,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,342.74 : 30,824.40 = 12,780.69 : x
  2. Step 2: Convert to fraction form
    22,342.74/30,824.40 = 12,780.69/x
  3. Step 3: Cross multiply
    22,342.74x = 30,824.40 × 12,780.69
  4. Step 4: Simplify right side
    22,342.74x = 393,956,961.28
  5. Step 5: Solve for x
    x = 393,956,961.28/22,342.74
  6. Step 6: Final answer
    x = 17,632.44

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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.