Home / 21,384,060.80-32,085,307.20-12,416,278.40

Finding the Fourth Proportional to 21,384,060.80, 32,085,307.20 and 12,416,278.40

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Solution

The fourth proportional to 21,384,060.80, 32,085,307.20 and 12,416,278.40 is: 18,629,768.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384,060.80 : 32,085,307.20 = 12,416,278.40 : x
  2. Step 2: Convert to fraction form
    21,384,060.80/32,085,307.20 = 12,416,278.40/x
  3. Step 3: Cross multiply
    21,384,060.80x = 32,085,307.20 × 12,416,278.40
  4. Step 4: Simplify right side
    21,384,060.80x = 398,380,106,744,724.50
  5. Step 5: Solve for x
    x = 398,380,106,744,724.50/21,384,060.80
  6. Step 6: Final answer
    x = 18,629,768.71

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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.