Home / 30,862.33-42,590.84-18,918.79

Finding the Fourth Proportional to 30,862.33, 42,590.84 and 18,918.79

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Solution

The fourth proportional to 30,862.33, 42,590.84 and 18,918.79 is: 26,108.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.33 : 42,590.84 = 18,918.79 : x
  2. Step 2: Convert to fraction form
    30,862.33/42,590.84 = 18,918.79/x
  3. Step 3: Cross multiply
    30,862.33x = 42,590.84 × 18,918.79
  4. Step 4: Simplify right side
    30,862.33x = 805,767,157.88
  5. Step 5: Solve for x
    x = 805,767,157.88/30,862.33
  6. Step 6: Final answer
    x = 26,108.44

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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.