Home / 19,090.02-28,605.80-7,990.66

Finding the Fourth Proportional to 19,090.02, 28,605.80 and 7,990.66

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Solution

The fourth proportional to 19,090.02, 28,605.80 and 7,990.66 is: 11,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,090.02 : 28,605.80 = 7,990.66 : x
  2. Step 2: Convert to fraction form
    19,090.02/28,605.80 = 7,990.66/x
  3. Step 3: Cross multiply
    19,090.02x = 28,605.80 × 7,990.66
  4. Step 4: Simplify right side
    19,090.02x = 228,579,221.83
  5. Step 5: Solve for x
    x = 228,579,221.83/19,090.02
  6. Step 6: Final answer
    x = 11,973.76

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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.