Home / 30,514.64-42,108.12-17,085.78

Finding the Fourth Proportional to 30,514.64, 42,108.12 and 17,085.78

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Solution

The fourth proportional to 30,514.64, 42,108.12 and 17,085.78 is: 23,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,514.64 : 42,108.12 = 17,085.78 : x
  2. Step 2: Convert to fraction form
    30,514.64/42,108.12 = 17,085.78/x
  3. Step 3: Cross multiply
    30,514.64x = 42,108.12 × 17,085.78
  4. Step 4: Simplify right side
    30,514.64x = 719,450,074.53
  5. Step 5: Solve for x
    x = 719,450,074.53/30,514.64
  6. Step 6: Final answer
    x = 23,577.21

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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.