Home / 28,684.32-39,584.08-15,763.81

Finding the Fourth Proportional to 28,684.32, 39,584.08 and 15,763.81

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Solution

The fourth proportional to 28,684.32, 39,584.08 and 15,763.81 is: 21,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.32 : 39,584.08 = 15,763.81 : x
  2. Step 2: Convert to fraction form
    28,684.32/39,584.08 = 15,763.81/x
  3. Step 3: Cross multiply
    28,684.32x = 39,584.08 × 15,763.81
  4. Step 4: Simplify right side
    28,684.32x = 623,995,876.74
  5. Step 5: Solve for x
    x = 623,995,876.74/28,684.32
  6. Step 6: Final answer
    x = 21,753.90

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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.