Home / 28,561.56-39,469.18-21,475.68

Finding the Fourth Proportional to 28,561.56, 39,469.18 and 21,475.68

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Solution

The fourth proportional to 28,561.56, 39,469.18 and 21,475.68 is: 29,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.56 : 39,469.18 = 21,475.68 : x
  2. Step 2: Convert to fraction form
    28,561.56/39,469.18 = 21,475.68/x
  3. Step 3: Cross multiply
    28,561.56x = 39,469.18 × 21,475.68
  4. Step 4: Simplify right side
    28,561.56x = 847,627,479.54
  5. Step 5: Solve for x
    x = 847,627,479.54/28,561.56
  6. Step 6: Final answer
    x = 29,677.21

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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.