Home / 15,365.61-21,198.09-9,395.37

Finding the Fourth Proportional to 15,365.61, 21,198.09 and 9,395.37

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Solution

The fourth proportional to 15,365.61, 21,198.09 and 9,395.37 is: 12,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.61 : 21,198.09 = 9,395.37 : x
  2. Step 2: Convert to fraction form
    15,365.61/21,198.09 = 9,395.37/x
  3. Step 3: Cross multiply
    15,365.61x = 21,198.09 × 9,395.37
  4. Step 4: Simplify right side
    15,365.61x = 199,163,898.84
  5. Step 5: Solve for x
    x = 199,163,898.84/15,365.61
  6. Step 6: Final answer
    x = 12,961.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.