Home / 29,211.43-40,311.78-15,782.65

Finding the Fourth Proportional to 29,211.43, 40,311.78 and 15,782.65

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Solution

The fourth proportional to 29,211.43, 40,311.78 and 15,782.65 is: 21,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,211.43 : 40,311.78 = 15,782.65 : x
  2. Step 2: Convert to fraction form
    29,211.43/40,311.78 = 15,782.65/x
  3. Step 3: Cross multiply
    29,211.43x = 40,311.78 × 15,782.65
  4. Step 4: Simplify right side
    29,211.43x = 636,226,714.62
  5. Step 5: Solve for x
    x = 636,226,714.62/29,211.43
  6. Step 6: Final answer
    x = 21,780.06

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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.