Home / 30,650.48-42,302.59-28,649.38

Finding the Fourth Proportional to 30,650.48, 42,302.59 and 28,649.38

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Solution

The fourth proportional to 30,650.48, 42,302.59 and 28,649.38 is: 39,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,650.48 : 42,302.59 = 28,649.38 : x
  2. Step 2: Convert to fraction form
    30,650.48/42,302.59 = 28,649.38/x
  3. Step 3: Cross multiply
    30,650.48x = 42,302.59 × 28,649.38
  4. Step 4: Simplify right side
    30,650.48x = 1,211,942,975.89
  5. Step 5: Solve for x
    x = 1,211,942,975.89/30,650.48
  6. Step 6: Final answer
    x = 39,540.75

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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.