Home / 21,445.70-32,170.74-7,403.90

Finding the Fourth Proportional to 21,445.70, 32,170.74 and 7,403.90

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Solution

The fourth proportional to 21,445.70, 32,170.74 and 7,403.90 is: 11,106.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,445.70 : 32,170.74 = 7,403.90 : x
  2. Step 2: Convert to fraction form
    21,445.70/32,170.74 = 7,403.90/x
  3. Step 3: Cross multiply
    21,445.70x = 32,170.74 × 7,403.90
  4. Step 4: Simplify right side
    21,445.70x = 238,188,941.89
  5. Step 5: Solve for x
    x = 238,188,941.89/21,445.70
  6. Step 6: Final answer
    x = 11,106.61

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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.