Home / 30,939.06-42,695.93-16,791.91

Finding the Fourth Proportional to 30,939.06, 42,695.93 and 16,791.91

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Solution

The fourth proportional to 30,939.06, 42,695.93 and 16,791.91 is: 23,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.06 : 42,695.93 = 16,791.91 : x
  2. Step 2: Convert to fraction form
    30,939.06/42,695.93 = 16,791.91/x
  3. Step 3: Cross multiply
    30,939.06x = 42,695.93 × 16,791.91
  4. Step 4: Simplify right side
    30,939.06x = 716,946,054.71
  5. Step 5: Solve for x
    x = 716,946,054.71/30,939.06
  6. Step 6: Final answer
    x = 23,172.84

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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.