Home / 21,803.26-30,088.81-12,245.21

Finding the Fourth Proportional to 21,803.26, 30,088.81 and 12,245.21

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Solution

The fourth proportional to 21,803.26, 30,088.81 and 12,245.21 is: 16,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.26 : 30,088.81 = 12,245.21 : x
  2. Step 2: Convert to fraction form
    21,803.26/30,088.81 = 12,245.21/x
  3. Step 3: Cross multiply
    21,803.26x = 30,088.81 × 12,245.21
  4. Step 4: Simplify right side
    21,803.26x = 368,443,893.12
  5. Step 5: Solve for x
    x = 368,443,893.12/21,803.26
  6. Step 6: Final answer
    x = 16,898.57

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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.