Home / 30,107.12-45,162.84-10,385.38

Finding the Fourth Proportional to 30,107.12, 45,162.84 and 10,385.38

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Solution

The fourth proportional to 30,107.12, 45,162.84 and 10,385.38 is: 15,578.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,107.12 : 45,162.84 = 10,385.38 : x
  2. Step 2: Convert to fraction form
    30,107.12/45,162.84 = 10,385.38/x
  3. Step 3: Cross multiply
    30,107.12x = 45,162.84 × 10,385.38
  4. Step 4: Simplify right side
    30,107.12x = 469,033,255.28
  5. Step 5: Solve for x
    x = 469,033,255.28/30,107.12
  6. Step 6: Final answer
    x = 15,578.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.