Home / 14,990,990.72-20,687,574.08-8,115,472.64

Finding the Fourth Proportional to 14,990,990.72, 20,687,574.08 and 8,115,472.64

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Solution

The fourth proportional to 14,990,990.72, 20,687,574.08 and 8,115,472.64 is: 11,199,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990,990.72 : 20,687,574.08 = 8,115,472.64 : x
  2. Step 2: Convert to fraction form
    14,990,990.72/20,687,574.08 = 8,115,472.64/x
  3. Step 3: Cross multiply
    14,990,990.72x = 20,687,574.08 × 8,115,472.64
  4. Step 4: Simplify right side
    14,990,990.72x = 167,889,441,434,213.16
  5. Step 5: Solve for x
    x = 167,889,441,434,213.16/14,990,990.72
  6. Step 6: Final answer
    x = 11,199,355.97

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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.