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Finding the Fourth Proportional to 11,564.80, 15,955.54 and 7,529.80

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Solution

The fourth proportional to 11,564.80, 15,955.54 and 7,529.80 is: 10,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,564.80 : 15,955.54 = 7,529.80 : x
  2. Step 2: Convert to fraction form
    11,564.80/15,955.54 = 7,529.80/x
  3. Step 3: Cross multiply
    11,564.80x = 15,955.54 × 7,529.80
  4. Step 4: Simplify right side
    11,564.80x = 120,142,025.09
  5. Step 5: Solve for x
    x = 120,142,025.09/11,564.80
  6. Step 6: Final answer
    x = 10,388.60

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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.