Home / 18,880.94-28,315.20-6,397.76

Finding the Fourth Proportional to 18,880.94, 28,315.20 and 6,397.76

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Solution

The fourth proportional to 18,880.94, 28,315.20 and 6,397.76 is: 9,594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.94 : 28,315.20 = 6,397.76 : x
  2. Step 2: Convert to fraction form
    18,880.94/28,315.20 = 6,397.76/x
  3. Step 3: Cross multiply
    18,880.94x = 28,315.20 × 6,397.76
  4. Step 4: Simplify right side
    18,880.94x = 181,153,853.95
  5. Step 5: Solve for x
    x = 181,153,853.95/18,880.94
  6. Step 6: Final answer
    x = 9,594.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.