Home / 25,570.78-38,361.40-10,779.70

Finding the Fourth Proportional to 25,570.78, 38,361.40 and 10,779.70

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Solution

The fourth proportional to 25,570.78, 38,361.40 and 10,779.70 is: 16,171.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,570.78 : 38,361.40 = 10,779.70 : x
  2. Step 2: Convert to fraction form
    25,570.78/38,361.40 = 10,779.70/x
  3. Step 3: Cross multiply
    25,570.78x = 38,361.40 × 10,779.70
  4. Step 4: Simplify right side
    25,570.78x = 413,524,383.58
  5. Step 5: Solve for x
    x = 413,524,383.58/25,570.78
  6. Step 6: Final answer
    x = 16,171.75

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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.