Home / 14,021.20-21,031.80-7,445.62

Finding the Fourth Proportional to 14,021.20, 21,031.80 and 7,445.62

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Solution

The fourth proportional to 14,021.20, 21,031.80 and 7,445.62 is: 11,168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,021.20 : 21,031.80 = 7,445.62 : x
  2. Step 2: Convert to fraction form
    14,021.20/21,031.80 = 7,445.62/x
  3. Step 3: Cross multiply
    14,021.20x = 21,031.80 × 7,445.62
  4. Step 4: Simplify right side
    14,021.20x = 156,594,790.72
  5. Step 5: Solve for x
    x = 156,594,790.72/14,021.20
  6. Step 6: Final answer
    x = 11,168.43

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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.