Home / 38,460.20-57,690.30-20,964.20

Finding the Fourth Proportional to 38,460.20, 57,690.30 and 20,964.20

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Solution

The fourth proportional to 38,460.20, 57,690.30 and 20,964.20 is: 31,446.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,460.20 : 57,690.30 = 20,964.20 : x
  2. Step 2: Convert to fraction form
    38,460.20/57,690.30 = 20,964.20/x
  3. Step 3: Cross multiply
    38,460.20x = 57,690.30 × 20,964.20
  4. Step 4: Simplify right side
    38,460.20x = 1,209,430,987.26
  5. Step 5: Solve for x
    x = 1,209,430,987.26/38,460.20
  6. Step 6: Final answer
    x = 31,446.30

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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.