Home / 30,111.36-45,117.77-18,229.12

Finding the Fourth Proportional to 30,111.36, 45,117.77 and 18,229.12

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Solution

The fourth proportional to 30,111.36, 45,117.77 and 18,229.12 is: 27,313.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.36 : 45,117.77 = 18,229.12 : x
  2. Step 2: Convert to fraction form
    30,111.36/45,117.77 = 18,229.12/x
  3. Step 3: Cross multiply
    30,111.36x = 45,117.77 × 18,229.12
  4. Step 4: Simplify right side
    30,111.36x = 822,457,256.14
  5. Step 5: Solve for x
    x = 822,457,256.14/30,111.36
  6. Step 6: Final answer
    x = 27,313.85

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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.