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Finding the Fourth Proportional to 13,055.56, 18,009.56 and 8,266.76

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Solution

The fourth proportional to 13,055.56, 18,009.56 and 8,266.76 is: 11,403.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.56 : 18,009.56 = 8,266.76 : x
  2. Step 2: Convert to fraction form
    13,055.56/18,009.56 = 8,266.76/x
  3. Step 3: Cross multiply
    13,055.56x = 18,009.56 × 8,266.76
  4. Step 4: Simplify right side
    13,055.56x = 148,880,710.23
  5. Step 5: Solve for x
    x = 148,880,710.23/13,055.56
  6. Step 6: Final answer
    x = 11,403.62

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Half scale
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Double scale
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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.