Home / 11,389.53-17,075.79-7,681.35

Finding the Fourth Proportional to 11,389.53, 17,075.79 and 7,681.35

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Solution

The fourth proportional to 11,389.53, 17,075.79 and 7,681.35 is: 11,516.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.53 : 17,075.79 = 7,681.35 : x
  2. Step 2: Convert to fraction form
    11,389.53/17,075.79 = 7,681.35/x
  3. Step 3: Cross multiply
    11,389.53x = 17,075.79 × 7,681.35
  4. Step 4: Simplify right side
    11,389.53x = 131,165,119.52
  5. Step 5: Solve for x
    x = 131,165,119.52/11,389.53
  6. Step 6: Final answer
    x = 11,516.29

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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.