Home / 28,478.06-39,298.47-15,902.54

Finding the Fourth Proportional to 28,478.06, 39,298.47 and 15,902.54

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Solution

The fourth proportional to 28,478.06, 39,298.47 and 15,902.54 is: 21,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.06 : 39,298.47 = 15,902.54 : x
  2. Step 2: Convert to fraction form
    28,478.06/39,298.47 = 15,902.54/x
  3. Step 3: Cross multiply
    28,478.06x = 39,298.47 × 15,902.54
  4. Step 4: Simplify right side
    28,478.06x = 624,945,491.11
  5. Step 5: Solve for x
    x = 624,945,491.11/28,478.06
  6. Step 6: Final answer
    x = 21,944.81

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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.