Home / 21,945,985.08-30,285,702.54-12,156,579.42

Finding the Fourth Proportional to 21,945,985.08, 30,285,702.54 and 12,156,579.42

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Solution

The fourth proportional to 21,945,985.08, 30,285,702.54 and 12,156,579.42 is: 16,776,214.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,945,985.08 : 30,285,702.54 = 12,156,579.42 : x
  2. Step 2: Convert to fraction form
    21,945,985.08/30,285,702.54 = 12,156,579.42/x
  3. Step 3: Cross multiply
    21,945,985.08x = 30,285,702.54 × 12,156,579.42
  4. Step 4: Simplify right side
    21,945,985.08x = 368,170,548,218,005.69
  5. Step 5: Solve for x
    x = 368,170,548,218,005.69/21,945,985.08
  6. Step 6: Final answer
    x = 16,776,214.28

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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.