Home / 30,821.36-46,238.88-12,103.20

Finding the Fourth Proportional to 30,821.36, 46,238.88 and 12,103.20

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Solution

The fourth proportional to 30,821.36, 46,238.88 and 12,103.20 is: 18,157.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,821.36 : 46,238.88 = 12,103.20 : x
  2. Step 2: Convert to fraction form
    30,821.36/46,238.88 = 12,103.20/x
  3. Step 3: Cross multiply
    30,821.36x = 46,238.88 × 12,103.20
  4. Step 4: Simplify right side
    30,821.36x = 559,638,412.42
  5. Step 5: Solve for x
    x = 559,638,412.42/30,821.36
  6. Step 6: Final answer
    x = 18,157.49

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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.