Home / 21,013,872.02-28,999,864.56-12,192,657.23

Finding the Fourth Proportional to 21,013,872.02, 28,999,864.56 and 12,192,657.23

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Solution

The fourth proportional to 21,013,872.02, 28,999,864.56 and 12,192,657.23 is: 16,826,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013,872.02 : 28,999,864.56 = 12,192,657.23 : x
  2. Step 2: Convert to fraction form
    21,013,872.02/28,999,864.56 = 12,192,657.23/x
  3. Step 3: Cross multiply
    21,013,872.02x = 28,999,864.56 × 12,192,657.23
  4. Step 4: Simplify right side
    21,013,872.02x = 353,585,408,151,505.44
  5. Step 5: Solve for x
    x = 353,585,408,151,505.44/21,013,872.02
  6. Step 6: Final answer
    x = 16,826,285.41

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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.