Home / 30,929.62-42,682.74-16,782.44

Finding the Fourth Proportional to 30,929.62, 42,682.74 and 16,782.44

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Solution

The fourth proportional to 30,929.62, 42,682.74 and 16,782.44 is: 23,159.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,929.62 : 42,682.74 = 16,782.44 : x
  2. Step 2: Convert to fraction form
    30,929.62/42,682.74 = 16,782.44/x
  3. Step 3: Cross multiply
    30,929.62x = 42,682.74 × 16,782.44
  4. Step 4: Simplify right side
    30,929.62x = 716,320,523.09
  5. Step 5: Solve for x
    x = 716,320,523.09/30,929.62
  6. Step 6: Final answer
    x = 23,159.69

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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.