Home / 12,791,621.60-19,162,549.20-7,727,890.40

Finding the Fourth Proportional to 12,791,621.60, 19,162,549.20 and 7,727,890.40

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Solution

The fourth proportional to 12,791,621.60, 19,162,549.20 and 7,727,890.40 is: 11,576,802.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791,621.60 : 19,162,549.20 = 7,727,890.40 : x
  2. Step 2: Convert to fraction form
    12,791,621.60/19,162,549.20 = 7,727,890.40/x
  3. Step 3: Cross multiply
    12,791,621.60x = 19,162,549.20 × 7,727,890.40
  4. Step 4: Simplify right side
    12,791,621.60x = 148,086,080,002,207.69
  5. Step 5: Solve for x
    x = 148,086,080,002,207.69/12,791,621.60
  6. Step 6: Final answer
    x = 11,576,802.74

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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.