Home / 23,515.12-32,419.40-20,143.48

Finding the Fourth Proportional to 23,515.12, 32,419.40 and 20,143.48

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Solution

The fourth proportional to 23,515.12, 32,419.40 and 20,143.48 is: 27,771.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,515.12 : 32,419.40 = 20,143.48 : x
  2. Step 2: Convert to fraction form
    23,515.12/32,419.40 = 20,143.48/x
  3. Step 3: Cross multiply
    23,515.12x = 32,419.40 × 20,143.48
  4. Step 4: Simplify right side
    23,515.12x = 653,039,535.51
  5. Step 5: Solve for x
    x = 653,039,535.51/23,515.12
  6. Step 6: Final answer
    x = 27,771.05

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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.