Home / 20,916.75-28,889.73-14,190.69

Finding the Fourth Proportional to 20,916.75, 28,889.73 and 14,190.69

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Solution

The fourth proportional to 20,916.75, 28,889.73 and 14,190.69 is: 19,599.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.75 : 28,889.73 = 14,190.69 : x
  2. Step 2: Convert to fraction form
    20,916.75/28,889.73 = 14,190.69/x
  3. Step 3: Cross multiply
    20,916.75x = 28,889.73 × 14,190.69
  4. Step 4: Simplify right side
    20,916.75x = 409,965,202.61
  5. Step 5: Solve for x
    x = 409,965,202.61/20,916.75
  6. Step 6: Final answer
    x = 19,599.85

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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.