Home / 12,919.67-19,384.33-8,798.55

Finding the Fourth Proportional to 12,919.67, 19,384.33 and 8,798.55

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Solution

The fourth proportional to 12,919.67, 19,384.33 and 8,798.55 is: 13,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.67 : 19,384.33 = 8,798.55 : x
  2. Step 2: Convert to fraction form
    12,919.67/19,384.33 = 8,798.55/x
  3. Step 3: Cross multiply
    12,919.67x = 19,384.33 × 8,798.55
  4. Step 4: Simplify right side
    12,919.67x = 170,553,899.80
  5. Step 5: Solve for x
    x = 170,553,899.80/12,919.67
  6. Step 6: Final answer
    x = 13,201.10

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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.