Home / 15,102.44-20,840.15-8,729.45

Finding the Fourth Proportional to 15,102.44, 20,840.15 and 8,729.45

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Solution

The fourth proportional to 15,102.44, 20,840.15 and 8,729.45 is: 12,045.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.44 : 20,840.15 = 8,729.45 : x
  2. Step 2: Convert to fraction form
    15,102.44/20,840.15 = 8,729.45/x
  3. Step 3: Cross multiply
    15,102.44x = 20,840.15 × 8,729.45
  4. Step 4: Simplify right side
    15,102.44x = 181,922,943.22
  5. Step 5: Solve for x
    x = 181,922,943.22/15,102.44
  6. Step 6: Final answer
    x = 12,045.93

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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.