Home / 13,618.44-18,794.16-8,312.40

Finding the Fourth Proportional to 13,618.44, 18,794.16 and 8,312.40

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Solution

The fourth proportional to 13,618.44, 18,794.16 and 8,312.40 is: 11,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.44 : 18,794.16 = 8,312.40 : x
  2. Step 2: Convert to fraction form
    13,618.44/18,794.16 = 8,312.40/x
  3. Step 3: Cross multiply
    13,618.44x = 18,794.16 × 8,312.40
  4. Step 4: Simplify right side
    13,618.44x = 156,224,575.58
  5. Step 5: Solve for x
    x = 156,224,575.58/13,618.44
  6. Step 6: Final answer
    x = 11,471.55

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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.