Home / 20,916,753.55-28,856,166.06-13,062,630.36

Finding the Fourth Proportional to 20,916,753.55, 28,856,166.06 and 13,062,630.36

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Solution

The fourth proportional to 20,916,753.55, 28,856,166.06 and 13,062,630.36 is: 18,020,838.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916,753.55 : 28,856,166.06 = 13,062,630.36 : x
  2. Step 2: Convert to fraction form
    20,916,753.55/28,856,166.06 = 13,062,630.36/x
  3. Step 3: Cross multiply
    20,916,753.55x = 28,856,166.06 × 13,062,630.36
  4. Step 4: Simplify right side
    20,916,753.55x = 376,937,430,963,887.44
  5. Step 5: Solve for x
    x = 376,937,430,963,887.44/20,916,753.55
  6. Step 6: Final answer
    x = 18,020,838.18

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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.