Home / 28,706.22-39,603.66-21,170.52

Finding the Fourth Proportional to 28,706.22, 39,603.66 and 21,170.52

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Solution

The fourth proportional to 28,706.22, 39,603.66 and 21,170.52 is: 29,207.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.22 : 39,603.66 = 21,170.52 : x
  2. Step 2: Convert to fraction form
    28,706.22/39,603.66 = 21,170.52/x
  3. Step 3: Cross multiply
    28,706.22x = 39,603.66 × 21,170.52
  4. Step 4: Simplify right side
    28,706.22x = 838,430,076.10
  5. Step 5: Solve for x
    x = 838,430,076.10/28,706.22
  6. Step 6: Final answer
    x = 29,207.26

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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.