Home / 13,868.07-19,135.69-7,899.85

Finding the Fourth Proportional to 13,868.07, 19,135.69 and 7,899.85

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Solution

The fourth proportional to 13,868.07, 19,135.69 and 7,899.85 is: 10,900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.07 : 19,135.69 = 7,899.85 : x
  2. Step 2: Convert to fraction form
    13,868.07/19,135.69 = 7,899.85/x
  3. Step 3: Cross multiply
    13,868.07x = 19,135.69 × 7,899.85
  4. Step 4: Simplify right side
    13,868.07x = 151,169,080.65
  5. Step 5: Solve for x
    x = 151,169,080.65/13,868.07
  6. Step 6: Final answer
    x = 10,900.51

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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.