Home / 21,235.02-31,840.23-7,190.36

Finding the Fourth Proportional to 21,235.02, 31,840.23 and 7,190.36

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Solution

The fourth proportional to 21,235.02, 31,840.23 and 7,190.36 is: 10,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.02 : 31,840.23 = 7,190.36 : x
  2. Step 2: Convert to fraction form
    21,235.02/31,840.23 = 7,190.36/x
  3. Step 3: Cross multiply
    21,235.02x = 31,840.23 × 7,190.36
  4. Step 4: Simplify right side
    21,235.02x = 228,942,716.18
  5. Step 5: Solve for x
    x = 228,942,716.18/21,235.02
  6. Step 6: Final answer
    x = 10,781.38

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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.