Home / 13,149.90-19,730.70-6,908.40

Finding the Fourth Proportional to 13,149.90, 19,730.70 and 6,908.40

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Solution

The fourth proportional to 13,149.90, 19,730.70 and 6,908.40 is: 10,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.90 : 19,730.70 = 6,908.40 : x
  2. Step 2: Convert to fraction form
    13,149.90/19,730.70 = 6,908.40/x
  3. Step 3: Cross multiply
    13,149.90x = 19,730.70 × 6,908.40
  4. Step 4: Simplify right side
    13,149.90x = 136,307,567.88
  5. Step 5: Solve for x
    x = 136,307,567.88/13,149.90
  6. Step 6: Final answer
    x = 10,365.67

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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.