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Finding the Fourth Proportional to 30,222.70, 41,713.29 and 19,313.86

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Solution

The fourth proportional to 30,222.70, 41,713.29 and 19,313.86 is: 26,656.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,222.70 : 41,713.29 = 19,313.86 : x
  2. Step 2: Convert to fraction form
    30,222.70/41,713.29 = 19,313.86/x
  3. Step 3: Cross multiply
    30,222.70x = 41,713.29 × 19,313.86
  4. Step 4: Simplify right side
    30,222.70x = 805,644,643.20
  5. Step 5: Solve for x
    x = 805,644,643.20/30,222.70
  6. Step 6: Final answer
    x = 26,656.94

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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.