Home / 30,686.06-42,374.49-19,375.58

Finding the Fourth Proportional to 30,686.06, 42,374.49 and 19,375.58

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Solution

The fourth proportional to 30,686.06, 42,374.49 and 19,375.58 is: 26,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,686.06 : 42,374.49 = 19,375.58 : x
  2. Step 2: Convert to fraction form
    30,686.06/42,374.49 = 19,375.58/x
  3. Step 3: Cross multiply
    30,686.06x = 42,374.49 × 19,375.58
  4. Step 4: Simplify right side
    30,686.06x = 821,030,320.95
  5. Step 5: Solve for x
    x = 821,030,320.95/30,686.06
  6. Step 6: Final answer
    x = 26,755.81

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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.