Home / 30,768.78-42,460.94-16,621.63

Finding the Fourth Proportional to 30,768.78, 42,460.94 and 16,621.63

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Solution

The fourth proportional to 30,768.78, 42,460.94 and 16,621.63 is: 22,937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,768.78 : 42,460.94 = 16,621.63 : x
  2. Step 2: Convert to fraction form
    30,768.78/42,460.94 = 16,621.63/x
  3. Step 3: Cross multiply
    30,768.78x = 42,460.94 × 16,621.63
  4. Step 4: Simplify right side
    30,768.78x = 705,770,034.13
  5. Step 5: Solve for x
    x = 705,770,034.13/30,768.78
  6. Step 6: Final answer
    x = 22,937.86

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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.