Home / 21,295,017.75-29,387,124.50-12,128,513.43

Finding the Fourth Proportional to 21,295,017.75, 29,387,124.50 and 12,128,513.43

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Solution

The fourth proportional to 21,295,017.75, 29,387,124.50 and 12,128,513.43 is: 16,737,348.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295,017.75 : 29,387,124.50 = 12,128,513.43 : x
  2. Step 2: Convert to fraction form
    21,295,017.75/29,387,124.50 = 12,128,513.43/x
  3. Step 3: Cross multiply
    21,295,017.75x = 29,387,124.50 × 12,128,513.43
  4. Step 4: Simplify right side
    21,295,017.75x = 356,422,134,106,689.50
  5. Step 5: Solve for x
    x = 356,422,134,106,689.50/21,295,017.75
  6. Step 6: Final answer
    x = 16,737,348.53

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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.