Home / 15,838.96-21,817.20-13,318.24

Finding the Fourth Proportional to 15,838.96, 21,817.20 and 13,318.24

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Solution

The fourth proportional to 15,838.96, 21,817.20 and 13,318.24 is: 18,345.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,838.96 : 21,817.20 = 13,318.24 : x
  2. Step 2: Convert to fraction form
    15,838.96/21,817.20 = 13,318.24/x
  3. Step 3: Cross multiply
    15,838.96x = 21,817.20 × 13,318.24
  4. Step 4: Simplify right side
    15,838.96x = 290,566,705.73
  5. Step 5: Solve for x
    x = 290,566,705.73/15,838.96
  6. Step 6: Final answer
    x = 18,345.06

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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.