Home / 14,109.60-21,145.83-7,872.55

Finding the Fourth Proportional to 14,109.60, 21,145.83 and 7,872.55

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Solution

The fourth proportional to 14,109.60, 21,145.83 and 7,872.55 is: 11,798.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.60 : 21,145.83 = 7,872.55 : x
  2. Step 2: Convert to fraction form
    14,109.60/21,145.83 = 7,872.55/x
  3. Step 3: Cross multiply
    14,109.60x = 21,145.83 × 7,872.55
  4. Step 4: Simplify right side
    14,109.60x = 166,471,603.97
  5. Step 5: Solve for x
    x = 166,471,603.97/14,109.60
  6. Step 6: Final answer
    x = 11,798.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.