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Finding the Fourth Proportional to 21,807.81, 30,093.51 and 12,246.84

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Solution

The fourth proportional to 21,807.81, 30,093.51 and 12,246.84 is: 16,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.81 : 30,093.51 = 12,246.84 : x
  2. Step 2: Convert to fraction form
    21,807.81/30,093.51 = 12,246.84/x
  3. Step 3: Cross multiply
    21,807.81x = 30,093.51 × 12,246.84
  4. Step 4: Simplify right side
    21,807.81x = 368,550,402.01
  5. Step 5: Solve for x
    x = 368,550,402.01/21,807.81
  6. Step 6: Final answer
    x = 16,899.93

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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.