Home / 21,389,384.72-29,516,972.94-12,221,830.64

Finding the Fourth Proportional to 21,389,384.72, 29,516,972.94 and 12,221,830.64

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Solution

The fourth proportional to 21,389,384.72, 29,516,972.94 and 12,221,830.64 is: 16,865,910.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389,384.72 : 29,516,972.94 = 12,221,830.64 : x
  2. Step 2: Convert to fraction form
    21,389,384.72/29,516,972.94 = 12,221,830.64/x
  3. Step 3: Cross multiply
    21,389,384.72x = 29,516,972.94 × 12,221,830.64
  4. Step 4: Simplify right side
    21,389,384.72x = 360,751,444,278,142.94
  5. Step 5: Solve for x
    x = 360,751,444,278,142.94/21,389,384.72
  6. Step 6: Final answer
    x = 16,865,910.31

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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.