Home / 30,791.34-42,514.80-18,870.96

Finding the Fourth Proportional to 30,791.34, 42,514.80 and 18,870.96

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Solution

The fourth proportional to 30,791.34, 42,514.80 and 18,870.96 is: 26,055.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,791.34 : 42,514.80 = 18,870.96 : x
  2. Step 2: Convert to fraction form
    30,791.34/42,514.80 = 18,870.96/x
  3. Step 3: Cross multiply
    30,791.34x = 42,514.80 × 18,870.96
  4. Step 4: Simplify right side
    30,791.34x = 802,295,090.21
  5. Step 5: Solve for x
    x = 802,295,090.21/30,791.34
  6. Step 6: Final answer
    x = 26,055.87

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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.