Home / 12,969.75-19,423.45-7,406.25

Finding the Fourth Proportional to 12,969.75, 19,423.45 and 7,406.25

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Solution

The fourth proportional to 12,969.75, 19,423.45 and 7,406.25 is: 11,091.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.75 : 19,423.45 = 7,406.25 : x
  2. Step 2: Convert to fraction form
    12,969.75/19,423.45 = 7,406.25/x
  3. Step 3: Cross multiply
    12,969.75x = 19,423.45 × 7,406.25
  4. Step 4: Simplify right side
    12,969.75x = 143,854,926.56
  5. Step 5: Solve for x
    x = 143,854,926.56/12,969.75
  6. Step 6: Final answer
    x = 11,091.57

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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.