Home / 10,115.90-15,172.01-2,718.63

Finding the Fourth Proportional to 10,115.90, 15,172.01 and 2,718.63

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Solution

The fourth proportional to 10,115.90, 15,172.01 and 2,718.63 is: 4,077.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.90 : 15,172.01 = 2,718.63 : x
  2. Step 2: Convert to fraction form
    10,115.90/15,172.01 = 2,718.63/x
  3. Step 3: Cross multiply
    10,115.90x = 15,172.01 × 2,718.63
  4. Step 4: Simplify right side
    10,115.90x = 41,247,075.05
  5. Step 5: Solve for x
    x = 41,247,075.05/10,115.90
  6. Step 6: Final answer
    x = 4,077.45

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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.