Home / 13,819.55-19,074.06-8,782.79

Finding the Fourth Proportional to 13,819.55, 19,074.06 and 8,782.79

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Solution

The fourth proportional to 13,819.55, 19,074.06 and 8,782.79 is: 12,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.55 : 19,074.06 = 8,782.79 : x
  2. Step 2: Convert to fraction form
    13,819.55/19,074.06 = 8,782.79/x
  3. Step 3: Cross multiply
    13,819.55x = 19,074.06 × 8,782.79
  4. Step 4: Simplify right side
    13,819.55x = 167,523,368.06
  5. Step 5: Solve for x
    x = 167,523,368.06/13,819.55
  6. Step 6: Final answer
    x = 12,122.21

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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.