Home / 15,004.50-20,706.22-8,717.28

Finding the Fourth Proportional to 15,004.50, 20,706.22 and 8,717.28

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Solution

The fourth proportional to 15,004.50, 20,706.22 and 8,717.28 is: 12,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.50 : 20,706.22 = 8,717.28 : x
  2. Step 2: Convert to fraction form
    15,004.50/20,706.22 = 8,717.28/x
  3. Step 3: Cross multiply
    15,004.50x = 20,706.22 × 8,717.28
  4. Step 4: Simplify right side
    15,004.50x = 180,501,917.48
  5. Step 5: Solve for x
    x = 180,501,917.48/15,004.50
  6. Step 6: Final answer
    x = 12,029.85

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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.