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Finding the Fourth Proportional to 20,356.74, 30,505.95 and 11,573.10

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Solution

The fourth proportional to 20,356.74, 30,505.95 and 11,573.10 is: 17,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.74 : 30,505.95 = 11,573.10 : x
  2. Step 2: Convert to fraction form
    20,356.74/30,505.95 = 11,573.10/x
  3. Step 3: Cross multiply
    20,356.74x = 30,505.95 × 11,573.10
  4. Step 4: Simplify right side
    20,356.74x = 353,048,409.95
  5. Step 5: Solve for x
    x = 353,048,409.95/20,356.74
  6. Step 6: Final answer
    x = 17,343.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.