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Finding the Fourth Proportional to 30,315.90, 41,839.02 and 16,889.34

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Solution

The fourth proportional to 30,315.90, 41,839.02 and 16,889.34 is: 23,309.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.90 : 41,839.02 = 16,889.34 : x
  2. Step 2: Convert to fraction form
    30,315.90/41,839.02 = 16,889.34/x
  3. Step 3: Cross multiply
    30,315.90x = 41,839.02 × 16,889.34
  4. Step 4: Simplify right side
    30,315.90x = 706,633,434.05
  5. Step 5: Solve for x
    x = 706,633,434.05/30,315.90
  6. Step 6: Final answer
    x = 23,309.00

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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.