Home / 20,713.98-28,586.50-15,600.34

Finding the Fourth Proportional to 20,713.98, 28,586.50 and 15,600.34

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Solution

The fourth proportional to 20,713.98, 28,586.50 and 15,600.34 is: 21,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.98 : 28,586.50 = 15,600.34 : x
  2. Step 2: Convert to fraction form
    20,713.98/28,586.50 = 15,600.34/x
  3. Step 3: Cross multiply
    20,713.98x = 28,586.50 × 15,600.34
  4. Step 4: Simplify right side
    20,713.98x = 445,959,119.41
  5. Step 5: Solve for x
    x = 445,959,119.41/20,713.98
  6. Step 6: Final answer
    x = 21,529.38

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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.