Home / 20,838,219.60-31,240,638-9,902,921.52

Finding the Fourth Proportional to 20,838,219.60, 31,240,638 and 9,902,921.52

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Solution

The fourth proportional to 20,838,219.60, 31,240,638 and 9,902,921.52 is: 14,846,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838,219.60 : 31,240,638 = 9,902,921.52 : x
  2. Step 2: Convert to fraction form
    20,838,219.60/31,240,638 = 9,902,921.52/x
  3. Step 3: Cross multiply
    20,838,219.60x = 31,240,638 × 9,902,921.52
  4. Step 4: Simplify right side
    20,838,219.60x = 309,373,586,348,729.75
  5. Step 5: Solve for x
    x = 309,373,586,348,729.75/20,838,219.60
  6. Step 6: Final answer
    x = 14,846,450.05

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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.