Home / 38,858.40-58,201.20-20,368.80

Finding the Fourth Proportional to 38,858.40, 58,201.20 and 20,368.80

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Solution

The fourth proportional to 38,858.40, 58,201.20 and 20,368.80 is: 30,507.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,858.40 : 58,201.20 = 20,368.80 : x
  2. Step 2: Convert to fraction form
    38,858.40/58,201.20 = 20,368.80/x
  3. Step 3: Cross multiply
    38,858.40x = 58,201.20 × 20,368.80
  4. Step 4: Simplify right side
    38,858.40x = 1,185,488,602.56
  5. Step 5: Solve for x
    x = 1,185,488,602.56/38,858.40
  6. Step 6: Final answer
    x = 30,507.91

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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.