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Finding the Fourth Proportional to 13,169,211.60, 19,795,807.80 and 12,413,384.40

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Solution

The fourth proportional to 13,169,211.60, 19,795,807.80 and 12,413,384.40 is: 18,659,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169,211.60 : 19,795,807.80 = 12,413,384.40 : x
  2. Step 2: Convert to fraction form
    13,169,211.60/19,795,807.80 = 12,413,384.40/x
  3. Step 3: Cross multiply
    13,169,211.60x = 19,795,807.80 × 12,413,384.40
  4. Step 4: Simplify right side
    13,169,211.60x = 245,732,971,729,918.34
  5. Step 5: Solve for x
    x = 245,732,971,729,918.34/13,169,211.60
  6. Step 6: Final answer
    x = 18,659,657.02

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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.