Home / 12,913.95-19,358.61-5,508.21

Finding the Fourth Proportional to 12,913.95, 19,358.61 and 5,508.21

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Solution

The fourth proportional to 12,913.95, 19,358.61 and 5,508.21 is: 8,257.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.95 : 19,358.61 = 5,508.21 : x
  2. Step 2: Convert to fraction form
    12,913.95/19,358.61 = 5,508.21/x
  3. Step 3: Cross multiply
    12,913.95x = 19,358.61 × 5,508.21
  4. Step 4: Simplify right side
    12,913.95x = 106,631,289.19
  5. Step 5: Solve for x
    x = 106,631,289.19/12,913.95
  6. Step 6: Final answer
    x = 8,257.06

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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.