Home / 12,911.85-19,349.31-7,353.72

Finding the Fourth Proportional to 12,911.85, 19,349.31 and 7,353.72

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Solution

The fourth proportional to 12,911.85, 19,349.31 and 7,353.72 is: 11,020.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.85 : 19,349.31 = 7,353.72 : x
  2. Step 2: Convert to fraction form
    12,911.85/19,349.31 = 7,353.72/x
  3. Step 3: Cross multiply
    12,911.85x = 19,349.31 × 7,353.72
  4. Step 4: Simplify right side
    12,911.85x = 142,289,407.93
  5. Step 5: Solve for x
    x = 142,289,407.93/12,911.85
  6. Step 6: Final answer
    x = 11,020.06

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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.