Home / 12,938.12-19,411.28-4,617.95

Finding the Fourth Proportional to 12,938.12, 19,411.28 and 4,617.95

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Solution

The fourth proportional to 12,938.12, 19,411.28 and 4,617.95 is: 6,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.12 : 19,411.28 = 4,617.95 : x
  2. Step 2: Convert to fraction form
    12,938.12/19,411.28 = 4,617.95/x
  3. Step 3: Cross multiply
    12,938.12x = 19,411.28 × 4,617.95
  4. Step 4: Simplify right side
    12,938.12x = 89,640,289.80
  5. Step 5: Solve for x
    x = 89,640,289.80/12,938.12
  6. Step 6: Final answer
    x = 6,928.39

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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.