Home / 20,956,907.74-28,909,950.42-12,249,391.54

Finding the Fourth Proportional to 20,956,907.74, 28,909,950.42 and 12,249,391.54

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Solution

The fourth proportional to 20,956,907.74, 28,909,950.42 and 12,249,391.54 is: 16,897,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,907.74 : 28,909,950.42 = 12,249,391.54 : x
  2. Step 2: Convert to fraction form
    20,956,907.74/28,909,950.42 = 12,249,391.54/x
  3. Step 3: Cross multiply
    20,956,907.74x = 28,909,950.42 × 12,249,391.54
  4. Step 4: Simplify right side
    20,956,907.74x = 354,129,302,096,567.44
  5. Step 5: Solve for x
    x = 354,129,302,096,567.44/20,956,907.74
  6. Step 6: Final answer
    x = 16,897,974.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.