Home / 21,455,007.60-32,157,628.20-8,667,116.40

Finding the Fourth Proportional to 21,455,007.60, 32,157,628.20 and 8,667,116.40

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Solution

The fourth proportional to 21,455,007.60, 32,157,628.20 and 8,667,116.40 is: 12,990,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455,007.60 : 32,157,628.20 = 8,667,116.40 : x
  2. Step 2: Convert to fraction form
    21,455,007.60/32,157,628.20 = 8,667,116.40/x
  3. Step 3: Cross multiply
    21,455,007.60x = 32,157,628.20 × 8,667,116.40
  4. Step 4: Simplify right side
    21,455,007.60x = 278,713,906,757,322.50
  5. Step 5: Solve for x
    x = 278,713,906,757,322.50/21,455,007.60
  6. Step 6: Final answer
    x = 12,990,622.61

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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.