Home / 21,070.80-31,601.93-7,739.22

Finding the Fourth Proportional to 21,070.80, 31,601.93 and 7,739.22

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Solution

The fourth proportional to 21,070.80, 31,601.93 and 7,739.22 is: 11,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.80 : 31,601.93 = 7,739.22 : x
  2. Step 2: Convert to fraction form
    21,070.80/31,601.93 = 7,739.22/x
  3. Step 3: Cross multiply
    21,070.80x = 31,601.93 × 7,739.22
  4. Step 4: Simplify right side
    21,070.80x = 244,574,250.00
  5. Step 5: Solve for x
    x = 244,574,250.00/21,070.80
  6. Step 6: Final answer
    x = 11,607.26

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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.