Home / 15,213.03-20,991.74-8,927.43

Finding the Fourth Proportional to 15,213.03, 20,991.74 and 8,927.43

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Solution

The fourth proportional to 15,213.03, 20,991.74 and 8,927.43 is: 12,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.03 : 20,991.74 = 8,927.43 : x
  2. Step 2: Convert to fraction form
    15,213.03/20,991.74 = 8,927.43/x
  3. Step 3: Cross multiply
    15,213.03x = 20,991.74 × 8,927.43
  4. Step 4: Simplify right side
    15,213.03x = 187,402,244.79
  5. Step 5: Solve for x
    x = 187,402,244.79/15,213.03
  6. Step 6: Final answer
    x = 12,318.54

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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.