Home / 13,685.61-18,874.55-9,443.44

Finding the Fourth Proportional to 13,685.61, 18,874.55 and 9,443.44

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Solution

The fourth proportional to 13,685.61, 18,874.55 and 9,443.44 is: 13,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.61 : 18,874.55 = 9,443.44 : x
  2. Step 2: Convert to fraction form
    13,685.61/18,874.55 = 9,443.44/x
  3. Step 3: Cross multiply
    13,685.61x = 18,874.55 × 9,443.44
  4. Step 4: Simplify right side
    13,685.61x = 178,240,680.45
  5. Step 5: Solve for x
    x = 178,240,680.45/13,685.61
  6. Step 6: Final answer
    x = 13,023.95

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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.