Home / 28,280.16-39,027.92-15,704.96

Finding the Fourth Proportional to 28,280.16, 39,027.92 and 15,704.96

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Solution

The fourth proportional to 28,280.16, 39,027.92 and 15,704.96 is: 21,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.16 : 39,027.92 = 15,704.96 : x
  2. Step 2: Convert to fraction form
    28,280.16/39,027.92 = 15,704.96/x
  3. Step 3: Cross multiply
    28,280.16x = 39,027.92 × 15,704.96
  4. Step 4: Simplify right side
    28,280.16x = 612,931,922.48
  5. Step 5: Solve for x
    x = 612,931,922.48/28,280.16
  6. Step 6: Final answer
    x = 21,673.57

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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.