Home / 21,470,788,638.40-32,195,407,825.26-12,509,873,796.72

Finding the Fourth Proportional to 21,470,788,638.40, 32,195,407,825.26 and 12,509,873,796.72

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Solution

The fourth proportional to 21,470,788,638.40, 32,195,407,825.26 and 12,509,873,796.72 is: 18,758,532,604.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470,788,638.40 : 32,195,407,825.26 = 12,509,873,796.72 : x
  2. Step 2: Convert to fraction form
    21,470,788,638.40/32,195,407,825.26 = 12,509,873,796.72/x
  3. Step 3: Cross multiply
    21,470,788,638.40x = 32,195,407,825.26 × 12,509,873,796.72
  4. Step 4: Simplify right side
    21,470,788,638.40x = 402,760,488,727,934,074,880
  5. Step 5: Solve for x
    x = 402,760,488,727,934,074,880/21,470,788,638.40
  6. Step 6: Final answer
    x = 18,758,532,604.97

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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.