Home / 30,929.22-42,682.50-16,782.12

Finding the Fourth Proportional to 30,929.22, 42,682.50 and 16,782.12

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Solution

The fourth proportional to 30,929.22, 42,682.50 and 16,782.12 is: 23,159.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,929.22 : 42,682.50 = 16,782.12 : x
  2. Step 2: Convert to fraction form
    30,929.22/42,682.50 = 16,782.12/x
  3. Step 3: Cross multiply
    30,929.22x = 42,682.50 × 16,782.12
  4. Step 4: Simplify right side
    30,929.22x = 716,302,836.90
  5. Step 5: Solve for x
    x = 716,302,836.90/30,929.22
  6. Step 6: Final answer
    x = 23,159.42

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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.