Home / 12,689.19-19,038.29-5,668.56

Finding the Fourth Proportional to 12,689.19, 19,038.29 and 5,668.56

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Solution

The fourth proportional to 12,689.19, 19,038.29 and 5,668.56 is: 8,504.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.19 : 19,038.29 = 5,668.56 : x
  2. Step 2: Convert to fraction form
    12,689.19/19,038.29 = 5,668.56/x
  3. Step 3: Cross multiply
    12,689.19x = 19,038.29 × 5,668.56
  4. Step 4: Simplify right side
    12,689.19x = 107,919,703.33
  5. Step 5: Solve for x
    x = 107,919,703.33/12,689.19
  6. Step 6: Final answer
    x = 8,504.85

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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.