Home / 25,907.20-38,860.80-11,113.60

Finding the Fourth Proportional to 25,907.20, 38,860.80 and 11,113.60

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Solution

The fourth proportional to 25,907.20, 38,860.80 and 11,113.60 is: 16,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,907.20 : 38,860.80 = 11,113.60 : x
  2. Step 2: Convert to fraction form
    25,907.20/38,860.80 = 11,113.60/x
  3. Step 3: Cross multiply
    25,907.20x = 38,860.80 × 11,113.60
  4. Step 4: Simplify right side
    25,907.20x = 431,883,386.88
  5. Step 5: Solve for x
    x = 431,883,386.88/25,907.20
  6. Step 6: Final answer
    x = 16,670.40

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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.