Home / 30,454.84-42,017.26-18,514.36

Finding the Fourth Proportional to 30,454.84, 42,017.26 and 18,514.36

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Solution

The fourth proportional to 30,454.84, 42,017.26 and 18,514.36 is: 25,543.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,454.84 : 42,017.26 = 18,514.36 : x
  2. Step 2: Convert to fraction form
    30,454.84/42,017.26 = 18,514.36/x
  3. Step 3: Cross multiply
    30,454.84x = 42,017.26 × 18,514.36
  4. Step 4: Simplify right side
    30,454.84x = 777,922,677.85
  5. Step 5: Solve for x
    x = 777,922,677.85/30,454.84
  6. Step 6: Final answer
    x = 25,543.48

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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.