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Finding the Fourth Proportional to 13,573.78, 18,719.85 and 9,795.94

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Solution

The fourth proportional to 13,573.78, 18,719.85 and 9,795.94 is: 13,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,573.78 : 18,719.85 = 9,795.94 : x
  2. Step 2: Convert to fraction form
    13,573.78/18,719.85 = 9,795.94/x
  3. Step 3: Cross multiply
    13,573.78x = 18,719.85 × 9,795.94
  4. Step 4: Simplify right side
    13,573.78x = 183,378,527.41
  5. Step 5: Solve for x
    x = 183,378,527.41/13,573.78
  6. Step 6: Final answer
    x = 13,509.76

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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.