Home / 21,143,724,857.18-31,729,559,755.81-9,954,798,848.24

Finding the Fourth Proportional to 21,143,724,857.18, 31,729,559,755.81 and 9,954,798,848.24

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Solution

The fourth proportional to 21,143,724,857.18, 31,729,559,755.81 and 9,954,798,848.24 is: 14,938,776,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143,724,857.18 : 31,729,559,755.81 = 9,954,798,848.24 : x
  2. Step 2: Convert to fraction form
    21,143,724,857.18/31,729,559,755.81 = 9,954,798,848.24/x
  3. Step 3: Cross multiply
    21,143,724,857.18x = 31,729,559,755.81 × 9,954,798,848.24
  4. Step 4: Simplify right side
    21,143,724,857.18x = 315,861,384,912,315,482,112
  5. Step 5: Solve for x
    x = 315,861,384,912,315,482,112/21,143,724,857.18
  6. Step 6: Final answer
    x = 14,938,776,731.44

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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.