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Finding the Fourth Proportional to 12,552,990.70, 18,829,486.05 and 12,552,990.70

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Solution

The fourth proportional to 12,552,990.70, 18,829,486.05 and 12,552,990.70 is: 18,829,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,552,990.70 : 18,829,486.05 = 12,552,990.70 : x
  2. Step 2: Convert to fraction form
    12,552,990.70/18,829,486.05 = 12,552,990.70/x
  3. Step 3: Cross multiply
    12,552,990.70x = 18,829,486.05 × 12,552,990.70
  4. Step 4: Simplify right side
    12,552,990.70x = 236,366,363,271,429.72
  5. Step 5: Solve for x
    x = 236,366,363,271,429.72/12,552,990.70
  6. Step 6: Final answer
    x = 18,829,486.05

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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.