Home / 21,105,764.70-31,658,647.05-12,595,710.30

Finding the Fourth Proportional to 21,105,764.70, 31,658,647.05 and 12,595,710.30

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Solution

The fourth proportional to 21,105,764.70, 31,658,647.05 and 12,595,710.30 is: 18,893,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105,764.70 : 31,658,647.05 = 12,595,710.30 : x
  2. Step 2: Convert to fraction form
    21,105,764.70/31,658,647.05 = 12,595,710.30/x
  3. Step 3: Cross multiply
    21,105,764.70x = 31,658,647.05 × 12,595,710.30
  4. Step 4: Simplify right side
    21,105,764.70x = 398,763,146,731,749.62
  5. Step 5: Solve for x
    x = 398,763,146,731,749.62/21,105,764.70
  6. Step 6: Final answer
    x = 18,893,565.45

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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.