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Finding the Fourth Proportional to 11,236.80, 15,501.06 and 7,703.40

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Solution

The fourth proportional to 11,236.80, 15,501.06 and 7,703.40 is: 10,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,236.80 : 15,501.06 = 7,703.40 : x
  2. Step 2: Convert to fraction form
    11,236.80/15,501.06 = 7,703.40/x
  3. Step 3: Cross multiply
    11,236.80x = 15,501.06 × 7,703.40
  4. Step 4: Simplify right side
    11,236.80x = 119,410,865.60
  5. Step 5: Solve for x
    x = 119,410,865.60/11,236.80
  6. Step 6: Final answer
    x = 10,626.77

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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.