Home / 11,107.90-16,641.60-8,783.20

Finding the Fourth Proportional to 11,107.90, 16,641.60 and 8,783.20

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Solution

The fourth proportional to 11,107.90, 16,641.60 and 8,783.20 is: 13,158.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.90 : 16,641.60 = 8,783.20 : x
  2. Step 2: Convert to fraction form
    11,107.90/16,641.60 = 8,783.20/x
  3. Step 3: Cross multiply
    11,107.90x = 16,641.60 × 8,783.20
  4. Step 4: Simplify right side
    11,107.90x = 146,166,501.12
  5. Step 5: Solve for x
    x = 146,166,501.12/11,107.90
  6. Step 6: Final answer
    x = 13,158.79

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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.