Home / 15,003.51-20,706.05-8,289.72

Finding the Fourth Proportional to 15,003.51, 20,706.05 and 8,289.72

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Solution

The fourth proportional to 15,003.51, 20,706.05 and 8,289.72 is: 11,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.51 : 20,706.05 = 8,289.72 : x
  2. Step 2: Convert to fraction form
    15,003.51/20,706.05 = 8,289.72/x
  3. Step 3: Cross multiply
    15,003.51x = 20,706.05 × 8,289.72
  4. Step 4: Simplify right side
    15,003.51x = 171,647,356.81
  5. Step 5: Solve for x
    x = 171,647,356.81/15,003.51
  6. Step 6: Final answer
    x = 11,440.48

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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.