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Finding the Fourth Proportional to 14,652,045.20, 21,978,067.80 and 12,487,206.80

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Solution

The fourth proportional to 14,652,045.20, 21,978,067.80 and 12,487,206.80 is: 18,730,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652,045.20 : 21,978,067.80 = 12,487,206.80 : x
  2. Step 2: Convert to fraction form
    14,652,045.20/21,978,067.80 = 12,487,206.80/x
  3. Step 3: Cross multiply
    14,652,045.20x = 21,978,067.80 × 12,487,206.80
  4. Step 4: Simplify right side
    14,652,045.20x = 274,444,677,683,021.06
  5. Step 5: Solve for x
    x = 274,444,677,683,021.06/14,652,045.20
  6. Step 6: Final answer
    x = 18,730,810.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.