Home / 28,712.41-39,628.01-18,500.56

Finding the Fourth Proportional to 28,712.41, 39,628.01 and 18,500.56

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Solution

The fourth proportional to 28,712.41, 39,628.01 and 18,500.56 is: 25,533.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.41 : 39,628.01 = 18,500.56 : x
  2. Step 2: Convert to fraction form
    28,712.41/39,628.01 = 18,500.56/x
  3. Step 3: Cross multiply
    28,712.41x = 39,628.01 × 18,500.56
  4. Step 4: Simplify right side
    28,712.41x = 733,140,323.87
  5. Step 5: Solve for x
    x = 733,140,323.87/28,712.41
  6. Step 6: Final answer
    x = 25,533.92

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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.