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Finding the Fourth Proportional to 12,684.95, 19,030.59 and 4,787.45

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Solution

The fourth proportional to 12,684.95, 19,030.59 and 4,787.45 is: 7,182.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.95 : 19,030.59 = 4,787.45 : x
  2. Step 2: Convert to fraction form
    12,684.95/19,030.59 = 4,787.45/x
  3. Step 3: Cross multiply
    12,684.95x = 19,030.59 × 4,787.45
  4. Step 4: Simplify right side
    12,684.95x = 91,107,902.94
  5. Step 5: Solve for x
    x = 91,107,902.94/12,684.95
  6. Step 6: Final answer
    x = 7,182.36

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1.5x scale

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.