Home / 28,938.40-43,424.86-12,926.68

Finding the Fourth Proportional to 28,938.40, 43,424.86 and 12,926.68

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Solution

The fourth proportional to 28,938.40, 43,424.86 and 12,926.68 is: 19,397.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.40 : 43,424.86 = 12,926.68 : x
  2. Step 2: Convert to fraction form
    28,938.40/43,424.86 = 12,926.68/x
  3. Step 3: Cross multiply
    28,938.40x = 43,424.86 × 12,926.68
  4. Step 4: Simplify right side
    28,938.40x = 561,339,269.26
  5. Step 5: Solve for x
    x = 561,339,269.26/28,938.40
  6. Step 6: Final answer
    x = 19,397.73

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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.