Home / 15,745.38-21,727.80-8,670.45

Finding the Fourth Proportional to 15,745.38, 21,727.80 and 8,670.45

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Solution

The fourth proportional to 15,745.38, 21,727.80 and 8,670.45 is: 11,964.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.38 : 21,727.80 = 8,670.45 : x
  2. Step 2: Convert to fraction form
    15,745.38/21,727.80 = 8,670.45/x
  3. Step 3: Cross multiply
    15,745.38x = 21,727.80 × 8,670.45
  4. Step 4: Simplify right side
    15,745.38x = 188,389,803.51
  5. Step 5: Solve for x
    x = 188,389,803.51/15,745.38
  6. Step 6: Final answer
    x = 11,964.77

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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.