Home / 30,866.19-42,589.73-18,119.93

Finding the Fourth Proportional to 30,866.19, 42,589.73 and 18,119.93

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Solution

The fourth proportional to 30,866.19, 42,589.73 and 18,119.93 is: 25,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,866.19 : 42,589.73 = 18,119.93 : x
  2. Step 2: Convert to fraction form
    30,866.19/42,589.73 = 18,119.93/x
  3. Step 3: Cross multiply
    30,866.19x = 42,589.73 × 18,119.93
  4. Step 4: Simplify right side
    30,866.19x = 771,722,622.77
  5. Step 5: Solve for x
    x = 771,722,622.77/30,866.19
  6. Step 6: Final answer
    x = 25,002.20

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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.