Home / 20,681.60-30,983.51-10,268.24

Finding the Fourth Proportional to 20,681.60, 30,983.51 and 10,268.24

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Solution

The fourth proportional to 20,681.60, 30,983.51 and 10,268.24 is: 15,383.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.60 : 30,983.51 = 10,268.24 : x
  2. Step 2: Convert to fraction form
    20,681.60/30,983.51 = 10,268.24/x
  3. Step 3: Cross multiply
    20,681.60x = 30,983.51 × 10,268.24
  4. Step 4: Simplify right side
    20,681.60x = 318,145,987.48
  5. Step 5: Solve for x
    x = 318,145,987.48/20,681.60
  6. Step 6: Final answer
    x = 15,383.05

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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.