Home / 28,464.92-39,281.55-15,889.67

Finding the Fourth Proportional to 28,464.92, 39,281.55 and 15,889.67

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Solution

The fourth proportional to 28,464.92, 39,281.55 and 15,889.67 is: 21,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.92 : 39,281.55 = 15,889.67 : x
  2. Step 2: Convert to fraction form
    28,464.92/39,281.55 = 15,889.67/x
  3. Step 3: Cross multiply
    28,464.92x = 39,281.55 × 15,889.67
  4. Step 4: Simplify right side
    28,464.92x = 624,170,866.59
  5. Step 5: Solve for x
    x = 624,170,866.59/28,464.92
  6. Step 6: Final answer
    x = 21,927.72

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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.