Home / 30,108.50-41,549.65-16,679.78

Finding the Fourth Proportional to 30,108.50, 41,549.65 and 16,679.78

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Solution

The fourth proportional to 30,108.50, 41,549.65 and 16,679.78 is: 23,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.50 : 41,549.65 = 16,679.78 : x
  2. Step 2: Convert to fraction form
    30,108.50/41,549.65 = 16,679.78/x
  3. Step 3: Cross multiply
    30,108.50x = 41,549.65 × 16,679.78
  4. Step 4: Simplify right side
    30,108.50x = 693,039,021.08
  5. Step 5: Solve for x
    x = 693,039,021.08/30,108.50
  6. Step 6: Final answer
    x = 23,018.05

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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.