Home / 15,758.02-21,745.08-8,684.49

Finding the Fourth Proportional to 15,758.02, 21,745.08 and 8,684.49

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Solution

The fourth proportional to 15,758.02, 21,745.08 and 8,684.49 is: 11,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,758.02 : 21,745.08 = 8,684.49 : x
  2. Step 2: Convert to fraction form
    15,758.02/21,745.08 = 8,684.49/x
  3. Step 3: Cross multiply
    15,758.02x = 21,745.08 × 8,684.49
  4. Step 4: Simplify right side
    15,758.02x = 188,844,929.81
  5. Step 5: Solve for x
    x = 188,844,929.81/15,758.02
  6. Step 6: Final answer
    x = 11,984.05

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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.