Home / 30,934.06-42,689.12-16,786.90

Finding the Fourth Proportional to 30,934.06, 42,689.12 and 16,786.90

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Solution

The fourth proportional to 30,934.06, 42,689.12 and 16,786.90 is: 23,165.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.06 : 42,689.12 = 16,786.90 : x
  2. Step 2: Convert to fraction form
    30,934.06/42,689.12 = 16,786.90/x
  3. Step 3: Cross multiply
    30,934.06x = 42,689.12 × 16,786.90
  4. Step 4: Simplify right side
    30,934.06x = 716,617,957.95
  5. Step 5: Solve for x
    x = 716,617,957.95/30,934.06
  6. Step 6: Final answer
    x = 23,165.99

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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.