Home / 25,779.20-38,620.20-13,256.60

Finding the Fourth Proportional to 25,779.20, 38,620.20 and 13,256.60

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Solution

The fourth proportional to 25,779.20, 38,620.20 and 13,256.60 is: 19,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,779.20 : 38,620.20 = 13,256.60 : x
  2. Step 2: Convert to fraction form
    25,779.20/38,620.20 = 13,256.60/x
  3. Step 3: Cross multiply
    25,779.20x = 38,620.20 × 13,256.60
  4. Step 4: Simplify right side
    25,779.20x = 511,972,543.32
  5. Step 5: Solve for x
    x = 511,972,543.32/25,779.20
  6. Step 6: Final answer
    x = 19,859.91

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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.