Home / 12,518.19-18,777.69-5,940.99

Finding the Fourth Proportional to 12,518.19, 18,777.69 and 5,940.99

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Solution

The fourth proportional to 12,518.19, 18,777.69 and 5,940.99 is: 8,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.19 : 18,777.69 = 5,940.99 : x
  2. Step 2: Convert to fraction form
    12,518.19/18,777.69 = 5,940.99/x
  3. Step 3: Cross multiply
    12,518.19x = 18,777.69 × 5,940.99
  4. Step 4: Simplify right side
    12,518.19x = 111,558,068.51
  5. Step 5: Solve for x
    x = 111,558,068.51/12,518.19
  6. Step 6: Final answer
    x = 8,911.68

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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.