Home / 21,783,422,996.90-30,060,818,165.08-12,138,559,478.38

Finding the Fourth Proportional to 21,783,422,996.90, 30,060,818,165.08 and 12,138,559,478.38

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Solution

The fourth proportional to 21,783,422,996.90, 30,060,818,165.08 and 12,138,559,478.38 is: 16,751,041,804.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783,422,996.90 : 30,060,818,165.08 = 12,138,559,478.38 : x
  2. Step 2: Convert to fraction form
    21,783,422,996.90/30,060,818,165.08 = 12,138,559,478.38/x
  3. Step 3: Cross multiply
    21,783,422,996.90x = 30,060,818,165.08 × 12,138,559,478.38
  4. Step 4: Simplify right side
    21,783,422,996.90x = 364,895,029,265,589,534,720
  5. Step 5: Solve for x
    x = 364,895,029,265,589,534,720/21,783,422,996.90
  6. Step 6: Final answer
    x = 16,751,041,804.47

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1.5x scale

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.