Home / 22,285.30-30,752.55-12,211.90

Finding the Fourth Proportional to 22,285.30, 30,752.55 and 12,211.90

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Solution

The fourth proportional to 22,285.30, 30,752.55 and 12,211.90 is: 16,851.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,285.30 : 30,752.55 = 12,211.90 : x
  2. Step 2: Convert to fraction form
    22,285.30/30,752.55 = 12,211.90/x
  3. Step 3: Cross multiply
    22,285.30x = 30,752.55 × 12,211.90
  4. Step 4: Simplify right side
    22,285.30x = 375,547,065.35
  5. Step 5: Solve for x
    x = 375,547,065.35/22,285.30
  6. Step 6: Final answer
    x = 16,851.78

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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.