Home / 20,331,083,985.72-28,048,192,776.14-12,696,876,245.88

Finding the Fourth Proportional to 20,331,083,985.72, 28,048,192,776.14 and 12,696,876,245.88

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Solution

The fourth proportional to 20,331,083,985.72, 28,048,192,776.14 and 12,696,876,245.88 is: 17,516,254,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331,083,985.72 : 28,048,192,776.14 = 12,696,876,245.88 : x
  2. Step 2: Convert to fraction form
    20,331,083,985.72/28,048,192,776.14 = 12,696,876,245.88/x
  3. Step 3: Cross multiply
    20,331,083,985.72x = 28,048,192,776.14 × 12,696,876,245.88
  4. Step 4: Simplify right side
    20,331,083,985.72x = 356,124,432,599,234,969,600
  5. Step 5: Solve for x
    x = 356,124,432,599,234,969,600/20,331,083,985.72
  6. Step 6: Final answer
    x = 17,516,254,069.35

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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.