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Finding the Fourth Proportional to 12,764,059.20, 19,146,088.80 and 8,732,980.80

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Solution

The fourth proportional to 12,764,059.20, 19,146,088.80 and 8,732,980.80 is: 13,099,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,764,059.20 : 19,146,088.80 = 8,732,980.80 : x
  2. Step 2: Convert to fraction form
    12,764,059.20/19,146,088.80 = 8,732,980.80/x
  3. Step 3: Cross multiply
    12,764,059.20x = 19,146,088.80 × 8,732,980.80
  4. Step 4: Simplify right side
    12,764,059.20x = 167,202,425,885,495.06
  5. Step 5: Solve for x
    x = 167,202,425,885,495.06/12,764,059.20
  6. Step 6: Final answer
    x = 13,099,471.20

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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.