Home / 12,556.16-18,836-3,790.08

Finding the Fourth Proportional to 12,556.16, 18,836 and 3,790.08

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Solution

The fourth proportional to 12,556.16, 18,836 and 3,790.08 is: 5,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.16 : 18,836 = 3,790.08 : x
  2. Step 2: Convert to fraction form
    12,556.16/18,836 = 3,790.08/x
  3. Step 3: Cross multiply
    12,556.16x = 18,836 × 3,790.08
  4. Step 4: Simplify right side
    12,556.16x = 71,389,946.88
  5. Step 5: Solve for x
    x = 71,389,946.88/12,556.16
  6. Step 6: Final answer
    x = 5,685.65

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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.