Home / 30,107.12-45,142.86-12,332.48

Finding the Fourth Proportional to 30,107.12, 45,142.86 and 12,332.48

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Solution

The fourth proportional to 30,107.12, 45,142.86 and 12,332.48 is: 18,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,107.12 : 45,142.86 = 12,332.48 : x
  2. Step 2: Convert to fraction form
    30,107.12/45,142.86 = 12,332.48/x
  3. Step 3: Cross multiply
    30,107.12x = 45,142.86 × 12,332.48
  4. Step 4: Simplify right side
    30,107.12x = 556,723,418.09
  5. Step 5: Solve for x
    x = 556,723,418.09/30,107.12
  6. Step 6: Final answer
    x = 18,491.42

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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.