Home / 13,998.40-19,310.98-8,958.58

Finding the Fourth Proportional to 13,998.40, 19,310.98 and 8,958.58

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Solution

The fourth proportional to 13,998.40, 19,310.98 and 8,958.58 is: 12,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.40 : 19,310.98 = 8,958.58 : x
  2. Step 2: Convert to fraction form
    13,998.40/19,310.98 = 8,958.58/x
  3. Step 3: Cross multiply
    13,998.40x = 19,310.98 × 8,958.58
  4. Step 4: Simplify right side
    13,998.40x = 172,998,888.53
  5. Step 5: Solve for x
    x = 172,998,888.53/13,998.40
  6. Step 6: Final answer
    x = 12,358.48

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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.