Home / 25,851.78-35,669.43-18,765.90

Finding the Fourth Proportional to 25,851.78, 35,669.43 and 18,765.90

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Solution

The fourth proportional to 25,851.78, 35,669.43 and 18,765.90 is: 25,892.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,851.78 : 35,669.43 = 18,765.90 : x
  2. Step 2: Convert to fraction form
    25,851.78/35,669.43 = 18,765.90/x
  3. Step 3: Cross multiply
    25,851.78x = 35,669.43 × 18,765.90
  4. Step 4: Simplify right side
    25,851.78x = 669,368,956.44
  5. Step 5: Solve for x
    x = 669,368,956.44/25,851.78
  6. Step 6: Final answer
    x = 25,892.57

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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.