Home / 13,146,961.60-19,720,442.40-7,478,257.60

Finding the Fourth Proportional to 13,146,961.60, 19,720,442.40 and 7,478,257.60

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Solution

The fourth proportional to 13,146,961.60, 19,720,442.40 and 7,478,257.60 is: 11,217,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146,961.60 : 19,720,442.40 = 7,478,257.60 : x
  2. Step 2: Convert to fraction form
    13,146,961.60/19,720,442.40 = 7,478,257.60/x
  3. Step 3: Cross multiply
    13,146,961.60x = 19,720,442.40 × 7,478,257.60
  4. Step 4: Simplify right side
    13,146,961.60x = 147,474,548,253,162.22
  5. Step 5: Solve for x
    x = 147,474,548,253,162.22/13,146,961.60
  6. Step 6: Final answer
    x = 11,217,386.40

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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.