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Finding the Fourth Proportional to 18,750.71, 25,895.34 and 16,220.67

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Solution

The fourth proportional to 18,750.71, 25,895.34 and 16,220.67 is: 22,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.71 : 25,895.34 = 16,220.67 : x
  2. Step 2: Convert to fraction form
    18,750.71/25,895.34 = 16,220.67/x
  3. Step 3: Cross multiply
    18,750.71x = 25,895.34 × 16,220.67
  4. Step 4: Simplify right side
    18,750.71x = 420,039,764.68
  5. Step 5: Solve for x
    x = 420,039,764.68/18,750.71
  6. Step 6: Final answer
    x = 22,401.28

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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.