Home / 30,447.03-42,029.85-18,514.20

Finding the Fourth Proportional to 30,447.03, 42,029.85 and 18,514.20

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Solution

The fourth proportional to 30,447.03, 42,029.85 and 18,514.20 is: 25,557.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.03 : 42,029.85 = 18,514.20 : x
  2. Step 2: Convert to fraction form
    30,447.03/42,029.85 = 18,514.20/x
  3. Step 3: Cross multiply
    30,447.03x = 42,029.85 × 18,514.20
  4. Step 4: Simplify right side
    30,447.03x = 778,149,048.87
  5. Step 5: Solve for x
    x = 778,149,048.87/30,447.03
  6. Step 6: Final answer
    x = 25,557.47

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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.