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Finding the Fourth Proportional to 13,889,576.40, 20,804,873.40 and 11,530,280.40

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Solution

The fourth proportional to 13,889,576.40, 20,804,873.40 and 11,530,280.40 is: 17,270,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889,576.40 : 20,804,873.40 = 11,530,280.40 : x
  2. Step 2: Convert to fraction form
    13,889,576.40/20,804,873.40 = 11,530,280.40/x
  3. Step 3: Cross multiply
    13,889,576.40x = 20,804,873.40 × 11,530,280.40
  4. Step 4: Simplify right side
    13,889,576.40x = 239,886,023,988,501.34
  5. Step 5: Solve for x
    x = 239,886,023,988,501.34/13,889,576.40
  6. Step 6: Final answer
    x = 17,270,938.80

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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.