Home / 18,775.10-25,907.88-11,219.93

Finding the Fourth Proportional to 18,775.10, 25,907.88 and 11,219.93

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Solution

The fourth proportional to 18,775.10, 25,907.88 and 11,219.93 is: 15,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.10 : 25,907.88 = 11,219.93 : x
  2. Step 2: Convert to fraction form
    18,775.10/25,907.88 = 11,219.93/x
  3. Step 3: Cross multiply
    18,775.10x = 25,907.88 × 11,219.93
  4. Step 4: Simplify right side
    18,775.10x = 290,684,600.05
  5. Step 5: Solve for x
    x = 290,684,600.05/18,775.10
  6. Step 6: Final answer
    x = 15,482.45

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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.