Home / 15,143.70-20,901.32-8,771.34

Finding the Fourth Proportional to 15,143.70, 20,901.32 and 8,771.34

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Solution

The fourth proportional to 15,143.70, 20,901.32 and 8,771.34 is: 12,106.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.70 : 20,901.32 = 8,771.34 : x
  2. Step 2: Convert to fraction form
    15,143.70/20,901.32 = 8,771.34/x
  3. Step 3: Cross multiply
    15,143.70x = 20,901.32 × 8,771.34
  4. Step 4: Simplify right side
    15,143.70x = 183,332,584.17
  5. Step 5: Solve for x
    x = 183,332,584.17/15,143.70
  6. Step 6: Final answer
    x = 12,106.19

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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.