Home / 43,809.90-65,714.85-20,438.70

Finding the Fourth Proportional to 43,809.90, 65,714.85 and 20,438.70

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Solution

The fourth proportional to 43,809.90, 65,714.85 and 20,438.70 is: 30,658.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,809.90 : 65,714.85 = 20,438.70 : x
  2. Step 2: Convert to fraction form
    43,809.90/65,714.85 = 20,438.70/x
  3. Step 3: Cross multiply
    43,809.90x = 65,714.85 × 20,438.70
  4. Step 4: Simplify right side
    43,809.90x = 1,343,126,104.70
  5. Step 5: Solve for x
    x = 1,343,126,104.70/43,809.90
  6. Step 6: Final answer
    x = 30,658.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.