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Finding the Fourth Proportional to 13,369,607.80, 20,054,411.70 and 12,519,302.20

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Solution

The fourth proportional to 13,369,607.80, 20,054,411.70 and 12,519,302.20 is: 18,778,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369,607.80 : 20,054,411.70 = 12,519,302.20 : x
  2. Step 2: Convert to fraction form
    13,369,607.80/20,054,411.70 = 12,519,302.20/x
  3. Step 3: Cross multiply
    13,369,607.80x = 20,054,411.70 × 12,519,302.20
  4. Step 4: Simplify right side
    13,369,607.80x = 251,067,240,515,515.72
  5. Step 5: Solve for x
    x = 251,067,240,515,515.72/13,369,607.80
  6. Step 6: Final answer
    x = 18,778,953.30

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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.