Home / 28,702.56-39,608.76-16,128.12

Finding the Fourth Proportional to 28,702.56, 39,608.76 and 16,128.12

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Solution

The fourth proportional to 28,702.56, 39,608.76 and 16,128.12 is: 22,256.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.56 : 39,608.76 = 16,128.12 : x
  2. Step 2: Convert to fraction form
    28,702.56/39,608.76 = 16,128.12/x
  3. Step 3: Cross multiply
    28,702.56x = 39,608.76 × 16,128.12
  4. Step 4: Simplify right side
    28,702.56x = 638,814,834.33
  5. Step 5: Solve for x
    x = 638,814,834.33/28,702.56
  6. Step 6: Final answer
    x = 22,256.37

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Double scale
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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.