Home / 18,820.48-25,972.40-12,851.99

Finding the Fourth Proportional to 18,820.48, 25,972.40 and 12,851.99

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Solution

The fourth proportional to 18,820.48, 25,972.40 and 12,851.99 is: 17,735.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.48 : 25,972.40 = 12,851.99 : x
  2. Step 2: Convert to fraction form
    18,820.48/25,972.40 = 12,851.99/x
  3. Step 3: Cross multiply
    18,820.48x = 25,972.40 × 12,851.99
  4. Step 4: Simplify right side
    18,820.48x = 333,797,025.08
  5. Step 5: Solve for x
    x = 333,797,025.08/18,820.48
  6. Step 6: Final answer
    x = 17,735.84

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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.