Home / 11,358.12-17,038.80-4,787.40

Finding the Fourth Proportional to 11,358.12, 17,038.80 and 4,787.40

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Solution

The fourth proportional to 11,358.12, 17,038.80 and 4,787.40 is: 7,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.12 : 17,038.80 = 4,787.40 : x
  2. Step 2: Convert to fraction form
    11,358.12/17,038.80 = 4,787.40/x
  3. Step 3: Cross multiply
    11,358.12x = 17,038.80 × 4,787.40
  4. Step 4: Simplify right side
    11,358.12x = 81,571,551.12
  5. Step 5: Solve for x
    x = 81,571,551.12/11,358.12
  6. Step 6: Final answer
    x = 7,181.78

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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.