Home / 19,787.40-29,681.98-11,015.72

Finding the Fourth Proportional to 19,787.40, 29,681.98 and 11,015.72

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Solution

The fourth proportional to 19,787.40, 29,681.98 and 11,015.72 is: 16,524.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.40 : 29,681.98 = 11,015.72 : x
  2. Step 2: Convert to fraction form
    19,787.40/29,681.98 = 11,015.72/x
  3. Step 3: Cross multiply
    19,787.40x = 29,681.98 × 11,015.72
  4. Step 4: Simplify right side
    19,787.40x = 326,968,380.73
  5. Step 5: Solve for x
    x = 326,968,380.73/19,787.40
  6. Step 6: Final answer
    x = 16,524.07

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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.