Home / 30,872.25-42,604.45-18,928.67

Finding the Fourth Proportional to 30,872.25, 42,604.45 and 18,928.67

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Solution

The fourth proportional to 30,872.25, 42,604.45 and 18,928.67 is: 26,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,872.25 : 42,604.45 = 18,928.67 : x
  2. Step 2: Convert to fraction form
    30,872.25/42,604.45 = 18,928.67/x
  3. Step 3: Cross multiply
    30,872.25x = 42,604.45 × 18,928.67
  4. Step 4: Simplify right side
    30,872.25x = 806,445,314.24
  5. Step 5: Solve for x
    x = 806,445,314.24/30,872.25
  6. Step 6: Final answer
    x = 26,122.01

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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.