Home / 28,647.84-39,534.08-15,900.57

Finding the Fourth Proportional to 28,647.84, 39,534.08 and 15,900.57

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Solution

The fourth proportional to 28,647.84, 39,534.08 and 15,900.57 is: 21,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.84 : 39,534.08 = 15,900.57 : x
  2. Step 2: Convert to fraction form
    28,647.84/39,534.08 = 15,900.57/x
  3. Step 3: Cross multiply
    28,647.84x = 39,534.08 × 15,900.57
  4. Step 4: Simplify right side
    28,647.84x = 628,614,326.92
  5. Step 5: Solve for x
    x = 628,614,326.92/28,647.84
  6. Step 6: Final answer
    x = 21,942.81

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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.