Home / 13,435.77-20,125.94-7,872.22

Finding the Fourth Proportional to 13,435.77, 20,125.94 and 7,872.22

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Solution

The fourth proportional to 13,435.77, 20,125.94 and 7,872.22 is: 11,792.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.77 : 20,125.94 = 7,872.22 : x
  2. Step 2: Convert to fraction form
    13,435.77/20,125.94 = 7,872.22/x
  3. Step 3: Cross multiply
    13,435.77x = 20,125.94 × 7,872.22
  4. Step 4: Simplify right side
    13,435.77x = 158,435,737.71
  5. Step 5: Solve for x
    x = 158,435,737.71/13,435.77
  6. Step 6: Final answer
    x = 11,792.08

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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.