Home / 37,779.21-52,135.42-20,785.20

Finding the Fourth Proportional to 37,779.21, 52,135.42 and 20,785.20

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Solution

The fourth proportional to 37,779.21, 52,135.42 and 20,785.20 is: 28,683.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,779.21 : 52,135.42 = 20,785.20 : x
  2. Step 2: Convert to fraction form
    37,779.21/52,135.42 = 20,785.20/x
  3. Step 3: Cross multiply
    37,779.21x = 52,135.42 × 20,785.20
  4. Step 4: Simplify right side
    37,779.21x = 1,083,644,871.11
  5. Step 5: Solve for x
    x = 1,083,644,871.11/37,779.21
  6. Step 6: Final answer
    x = 28,683.63

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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.