Home / 10,919.04-15,075.15-7,739.07

Finding the Fourth Proportional to 10,919.04, 15,075.15 and 7,739.07

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Solution

The fourth proportional to 10,919.04, 15,075.15 and 7,739.07 is: 10,684.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.04 : 15,075.15 = 7,739.07 : x
  2. Step 2: Convert to fraction form
    10,919.04/15,075.15 = 7,739.07/x
  3. Step 3: Cross multiply
    10,919.04x = 15,075.15 × 7,739.07
  4. Step 4: Simplify right side
    10,919.04x = 116,667,641.11
  5. Step 5: Solve for x
    x = 116,667,641.11/10,919.04
  6. Step 6: Final answer
    x = 10,684.79

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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.