Home / 13,972.31-19,280.62-8,228.85

Finding the Fourth Proportional to 13,972.31, 19,280.62 and 8,228.85

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Solution

The fourth proportional to 13,972.31, 19,280.62 and 8,228.85 is: 11,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.31 : 19,280.62 = 8,228.85 : x
  2. Step 2: Convert to fraction form
    13,972.31/19,280.62 = 8,228.85/x
  3. Step 3: Cross multiply
    13,972.31x = 19,280.62 × 8,228.85
  4. Step 4: Simplify right side
    13,972.31x = 158,657,329.89
  5. Step 5: Solve for x
    x = 158,657,329.89/13,972.31
  6. Step 6: Final answer
    x = 11,355.13

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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.