Home / 20,972,095,138.11-28,948,388,374.77-16,693,157,402.31

Finding the Fourth Proportional to 20,972,095,138.11, 28,948,388,374.77 and 16,693,157,402.31

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Solution

The fourth proportional to 20,972,095,138.11, 28,948,388,374.77 and 16,693,157,402.31 is: 23,042,047,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,095,138.11 : 28,948,388,374.77 = 16,693,157,402.31 : x
  2. Step 2: Convert to fraction form
    20,972,095,138.11/28,948,388,374.77 = 16,693,157,402.31/x
  3. Step 3: Cross multiply
    20,972,095,138.11x = 28,948,388,374.77 × 16,693,157,402.31
  4. Step 4: Simplify right side
    20,972,095,138.11x = 483,240,003,683,236,577,280
  5. Step 5: Solve for x
    x = 483,240,003,683,236,577,280/20,972,095,138.11
  6. Step 6: Final answer
    x = 23,042,047,086.90

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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.