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Finding the Fourth Proportional to 20,533.86, 28,336.86 and 12,034.08

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Solution

The fourth proportional to 20,533.86, 28,336.86 and 12,034.08 is: 16,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.86 : 28,336.86 = 12,034.08 : x
  2. Step 2: Convert to fraction form
    20,533.86/28,336.86 = 12,034.08/x
  3. Step 3: Cross multiply
    20,533.86x = 28,336.86 × 12,034.08
  4. Step 4: Simplify right side
    20,533.86x = 341,008,040.19
  5. Step 5: Solve for x
    x = 341,008,040.19/20,533.86
  6. Step 6: Final answer
    x = 16,607.11

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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.