Home / 15,639.35-21,601.25-11,383.67

Finding the Fourth Proportional to 15,639.35, 21,601.25 and 11,383.67

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Solution

The fourth proportional to 15,639.35, 21,601.25 and 11,383.67 is: 15,723.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.35 : 21,601.25 = 11,383.67 : x
  2. Step 2: Convert to fraction form
    15,639.35/21,601.25 = 11,383.67/x
  3. Step 3: Cross multiply
    15,639.35x = 21,601.25 × 11,383.67
  4. Step 4: Simplify right side
    15,639.35x = 245,901,541.36
  5. Step 5: Solve for x
    x = 245,901,541.36/15,639.35
  6. Step 6: Final answer
    x = 15,723.26

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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.