Home / 14,015.20-19,340.40-8,972.32

Finding the Fourth Proportional to 14,015.20, 19,340.40 and 8,972.32

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Solution

The fourth proportional to 14,015.20, 19,340.40 and 8,972.32 is: 12,381.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,015.20 : 19,340.40 = 8,972.32 : x
  2. Step 2: Convert to fraction form
    14,015.20/19,340.40 = 8,972.32/x
  3. Step 3: Cross multiply
    14,015.20x = 19,340.40 × 8,972.32
  4. Step 4: Simplify right side
    14,015.20x = 173,528,257.73
  5. Step 5: Solve for x
    x = 173,528,257.73/14,015.20
  6. Step 6: Final answer
    x = 12,381.43

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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.