Home / 28,464.75-39,281.38-15,889.50

Finding the Fourth Proportional to 28,464.75, 39,281.38 and 15,889.50

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Solution

The fourth proportional to 28,464.75, 39,281.38 and 15,889.50 is: 21,927.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.75 : 39,281.38 = 15,889.50 : x
  2. Step 2: Convert to fraction form
    28,464.75/39,281.38 = 15,889.50/x
  3. Step 3: Cross multiply
    28,464.75x = 39,281.38 × 15,889.50
  4. Step 4: Simplify right side
    28,464.75x = 624,161,447.79
  5. Step 5: Solve for x
    x = 624,161,447.79/28,464.75
  6. Step 6: Final answer
    x = 21,927.52

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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.