Home / 13,578.02-20,368.14-3,718.09

Finding the Fourth Proportional to 13,578.02, 20,368.14 and 3,718.09

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Solution

The fourth proportional to 13,578.02, 20,368.14 and 3,718.09 is: 5,577.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.02 : 20,368.14 = 3,718.09 : x
  2. Step 2: Convert to fraction form
    13,578.02/20,368.14 = 3,718.09/x
  3. Step 3: Cross multiply
    13,578.02x = 20,368.14 × 3,718.09
  4. Step 4: Simplify right side
    13,578.02x = 75,730,577.65
  5. Step 5: Solve for x
    x = 75,730,577.65/13,578.02
  6. Step 6: Final answer
    x = 5,577.44

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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.