Home / 12,939,810.70-19,409,716.05-12,855,829.90

Finding the Fourth Proportional to 12,939,810.70, 19,409,716.05 and 12,855,829.90

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Solution

The fourth proportional to 12,939,810.70, 19,409,716.05 and 12,855,829.90 is: 19,283,744.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939,810.70 : 19,409,716.05 = 12,855,829.90 : x
  2. Step 2: Convert to fraction form
    12,939,810.70/19,409,716.05 = 12,855,829.90/x
  3. Step 3: Cross multiply
    12,939,810.70x = 19,409,716.05 × 12,855,829.90
  4. Step 4: Simplify right side
    12,939,810.70x = 249,528,007,946,099.91
  5. Step 5: Solve for x
    x = 249,528,007,946,099.91/12,939,810.70
  6. Step 6: Final answer
    x = 19,283,744.85

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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.