Home / 30,768.32-42,460.30-16,621.16

Finding the Fourth Proportional to 30,768.32, 42,460.30 and 16,621.16

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Solution

The fourth proportional to 30,768.32, 42,460.30 and 16,621.16 is: 22,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,768.32 : 42,460.30 = 16,621.16 : x
  2. Step 2: Convert to fraction form
    30,768.32/42,460.30 = 16,621.16/x
  3. Step 3: Cross multiply
    30,768.32x = 42,460.30 × 16,621.16
  4. Step 4: Simplify right side
    30,768.32x = 705,739,439.95
  5. Step 5: Solve for x
    x = 705,739,439.95/30,768.32
  6. Step 6: Final answer
    x = 22,937.21

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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.