Home / 15,465.36-21,342.24-8,391.77

Finding the Fourth Proportional to 15,465.36, 21,342.24 and 8,391.77

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Solution

The fourth proportional to 15,465.36, 21,342.24 and 8,391.77 is: 11,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.36 : 21,342.24 = 8,391.77 : x
  2. Step 2: Convert to fraction form
    15,465.36/21,342.24 = 8,391.77/x
  3. Step 3: Cross multiply
    15,465.36x = 21,342.24 × 8,391.77
  4. Step 4: Simplify right side
    15,465.36x = 179,099,169.36
  5. Step 5: Solve for x
    x = 179,099,169.36/15,465.36
  6. Step 6: Final answer
    x = 11,580.67

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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.