Home / 21,313.37-29,403.11-20,325.17

Finding the Fourth Proportional to 21,313.37, 29,403.11 and 20,325.17

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Solution

The fourth proportional to 21,313.37, 29,403.11 and 20,325.17 is: 28,039.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.37 : 29,403.11 = 20,325.17 : x
  2. Step 2: Convert to fraction form
    21,313.37/29,403.11 = 20,325.17/x
  3. Step 3: Cross multiply
    21,313.37x = 29,403.11 × 20,325.17
  4. Step 4: Simplify right side
    21,313.37x = 597,623,113.08
  5. Step 5: Solve for x
    x = 597,623,113.08/21,313.37
  6. Step 6: Final answer
    x = 28,039.83

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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.