Home / 20,713.72-28,594.47-12,213.04

Finding the Fourth Proportional to 20,713.72, 28,594.47 and 12,213.04

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Solution

The fourth proportional to 20,713.72, 28,594.47 and 12,213.04 is: 16,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.72 : 28,594.47 = 12,213.04 : x
  2. Step 2: Convert to fraction form
    20,713.72/28,594.47 = 12,213.04/x
  3. Step 3: Cross multiply
    20,713.72x = 28,594.47 × 12,213.04
  4. Step 4: Simplify right side
    20,713.72x = 349,225,405.89
  5. Step 5: Solve for x
    x = 349,225,405.89/20,713.72
  6. Step 6: Final answer
    x = 16,859.62

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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.