Home / 14,305.05-19,737.75-8,640.72

Finding the Fourth Proportional to 14,305.05, 19,737.75 and 8,640.72

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Solution

The fourth proportional to 14,305.05, 19,737.75 and 8,640.72 is: 11,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,305.05 : 19,737.75 = 8,640.72 : x
  2. Step 2: Convert to fraction form
    14,305.05/19,737.75 = 8,640.72/x
  3. Step 3: Cross multiply
    14,305.05x = 19,737.75 × 8,640.72
  4. Step 4: Simplify right side
    14,305.05x = 170,548,371.18
  5. Step 5: Solve for x
    x = 170,548,371.18/14,305.05
  6. Step 6: Final answer
    x = 11,922.25

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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.