Home / 12,732.89-19,071.65-7,787.57

Finding the Fourth Proportional to 12,732.89, 19,071.65 and 7,787.57

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Solution

The fourth proportional to 12,732.89, 19,071.65 and 7,787.57 is: 11,664.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,732.89 : 19,071.65 = 7,787.57 : x
  2. Step 2: Convert to fraction form
    12,732.89/19,071.65 = 7,787.57/x
  3. Step 3: Cross multiply
    12,732.89x = 19,071.65 × 7,787.57
  4. Step 4: Simplify right side
    12,732.89x = 148,521,675.09
  5. Step 5: Solve for x
    x = 148,521,675.09/12,732.89
  6. Step 6: Final answer
    x = 11,664.42

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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.