Home / 22,387.08-30,894.73-12,315.80

Finding the Fourth Proportional to 22,387.08, 30,894.73 and 12,315.80

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Solution

The fourth proportional to 22,387.08, 30,894.73 and 12,315.80 is: 16,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,387.08 : 30,894.73 = 12,315.80 : x
  2. Step 2: Convert to fraction form
    22,387.08/30,894.73 = 12,315.80/x
  3. Step 3: Cross multiply
    22,387.08x = 30,894.73 × 12,315.80
  4. Step 4: Simplify right side
    22,387.08x = 380,493,257.67
  5. Step 5: Solve for x
    x = 380,493,257.67/22,387.08
  6. Step 6: Final answer
    x = 16,996.11

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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.