Home / 21,384,061.80-32,085,308.70-12,416,279.40

Finding the Fourth Proportional to 21,384,061.80, 32,085,308.70 and 12,416,279.40

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Solution

The fourth proportional to 21,384,061.80, 32,085,308.70 and 12,416,279.40 is: 18,629,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384,061.80 : 32,085,308.70 = 12,416,279.40 : x
  2. Step 2: Convert to fraction form
    21,384,061.80/32,085,308.70 = 12,416,279.40/x
  3. Step 3: Cross multiply
    21,384,061.80x = 32,085,308.70 × 12,416,279.40
  4. Step 4: Simplify right side
    21,384,061.80x = 398,380,157,454,450.81
  5. Step 5: Solve for x
    x = 398,380,157,454,450.81/21,384,061.80
  6. Step 6: Final answer
    x = 18,629,770.21

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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.