Home / 38,649.40-57,984.90-18,928.60

Finding the Fourth Proportional to 38,649.40, 57,984.90 and 18,928.60

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Solution

The fourth proportional to 38,649.40, 57,984.90 and 18,928.60 is: 28,398.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,649.40 : 57,984.90 = 18,928.60 : x
  2. Step 2: Convert to fraction form
    38,649.40/57,984.90 = 18,928.60/x
  3. Step 3: Cross multiply
    38,649.40x = 57,984.90 × 18,928.60
  4. Step 4: Simplify right side
    38,649.40x = 1,097,572,978.14
  5. Step 5: Solve for x
    x = 1,097,572,978.14/38,649.40
  6. Step 6: Final answer
    x = 28,398.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.