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Finding the Fourth Proportional to 20,036.55, 30,030.21 and 11,253

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Solution

The fourth proportional to 20,036.55, 30,030.21 and 11,253 is: 16,865.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,036.55 : 30,030.21 = 11,253 : x
  2. Step 2: Convert to fraction form
    20,036.55/30,030.21 = 11,253/x
  3. Step 3: Cross multiply
    20,036.55x = 30,030.21 × 11,253
  4. Step 4: Simplify right side
    20,036.55x = 337,929,953.13
  5. Step 5: Solve for x
    x = 337,929,953.13/20,036.55
  6. Step 6: Final answer
    x = 16,865.68

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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.