Home / 12,606,438.40-18,923,654.40-7,819,532.80

Finding the Fourth Proportional to 12,606,438.40, 18,923,654.40 and 7,819,532.80

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Solution

The fourth proportional to 12,606,438.40, 18,923,654.40 and 7,819,532.80 is: 11,737,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606,438.40 : 18,923,654.40 = 7,819,532.80 : x
  2. Step 2: Convert to fraction form
    12,606,438.40/18,923,654.40 = 7,819,532.80/x
  3. Step 3: Cross multiply
    12,606,438.40x = 18,923,654.40 × 7,819,532.80
  4. Step 4: Simplify right side
    12,606,438.40x = 147,974,136,276,664.31
  5. Step 5: Solve for x
    x = 147,974,136,276,664.31/12,606,438.40
  6. Step 6: Final answer
    x = 11,737,981.15

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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.