Home / 11,137.60-15,370.05-7,160.00

Finding the Fourth Proportional to 11,137.60, 15,370.05 and 7,160.00

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Solution

The fourth proportional to 11,137.60, 15,370.05 and 7,160.00 is: 9,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.60 : 15,370.05 = 7,160.00 : x
  2. Step 2: Convert to fraction form
    11,137.60/15,370.05 = 7,160.00/x
  3. Step 3: Cross multiply
    11,137.60x = 15,370.05 × 7,160.00
  4. Step 4: Simplify right side
    11,137.60x = 110,049,508.00
  5. Step 5: Solve for x
    x = 110,049,508.00/11,137.60
  6. Step 6: Final answer
    x = 9,880.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.