Home / 20,706.03-30,994.65-13,317.21

Finding the Fourth Proportional to 20,706.03, 30,994.65 and 13,317.21

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Solution

The fourth proportional to 20,706.03, 30,994.65 and 13,317.21 is: 19,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.03 : 30,994.65 = 13,317.21 : x
  2. Step 2: Convert to fraction form
    20,706.03/30,994.65 = 13,317.21/x
  3. Step 3: Cross multiply
    20,706.03x = 30,994.65 × 13,317.21
  4. Step 4: Simplify right side
    20,706.03x = 412,762,262.93
  5. Step 5: Solve for x
    x = 412,762,262.93/20,706.03
  6. Step 6: Final answer
    x = 19,934.40

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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.