Home / 27,865.08-38,453.80-15,928.67

Finding the Fourth Proportional to 27,865.08, 38,453.80 and 15,928.67

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Solution

The fourth proportional to 27,865.08, 38,453.80 and 15,928.67 is: 21,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,865.08 : 38,453.80 = 15,928.67 : x
  2. Step 2: Convert to fraction form
    27,865.08/38,453.80 = 15,928.67/x
  3. Step 3: Cross multiply
    27,865.08x = 38,453.80 × 15,928.67
  4. Step 4: Simplify right side
    27,865.08x = 612,517,890.45
  5. Step 5: Solve for x
    x = 612,517,890.45/27,865.08
  6. Step 6: Final answer
    x = 21,981.56

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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.