Home / 20,429.60-30,644.40-17,837.60

Finding the Fourth Proportional to 20,429.60, 30,644.40 and 17,837.60

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Solution

The fourth proportional to 20,429.60, 30,644.40 and 17,837.60 is: 26,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.60 : 30,644.40 = 17,837.60 : x
  2. Step 2: Convert to fraction form
    20,429.60/30,644.40 = 17,837.60/x
  3. Step 3: Cross multiply
    20,429.60x = 30,644.40 × 17,837.60
  4. Step 4: Simplify right side
    20,429.60x = 546,622,549.44
  5. Step 5: Solve for x
    x = 546,622,549.44/20,429.60
  6. Step 6: Final answer
    x = 26,756.40

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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.