Home / 22,421.45-30,936.86-12,860.62

Finding the Fourth Proportional to 22,421.45, 30,936.86 and 12,860.62

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Solution

The fourth proportional to 22,421.45, 30,936.86 and 12,860.62 is: 17,744.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.45 : 30,936.86 = 12,860.62 : x
  2. Step 2: Convert to fraction form
    22,421.45/30,936.86 = 12,860.62/x
  3. Step 3: Cross multiply
    22,421.45x = 30,936.86 × 12,860.62
  4. Step 4: Simplify right side
    22,421.45x = 397,866,981.47
  5. Step 5: Solve for x
    x = 397,866,981.47/22,421.45
  6. Step 6: Final answer
    x = 17,744.93

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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.