Home / 12,689.32-19,038.48-5,668.68

Finding the Fourth Proportional to 12,689.32, 19,038.48 and 5,668.68

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Solution

The fourth proportional to 12,689.32, 19,038.48 and 5,668.68 is: 8,505.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.32 : 19,038.48 = 5,668.68 : x
  2. Step 2: Convert to fraction form
    12,689.32/19,038.48 = 5,668.68/x
  3. Step 3: Cross multiply
    12,689.32x = 19,038.48 × 5,668.68
  4. Step 4: Simplify right side
    12,689.32x = 107,923,050.81
  5. Step 5: Solve for x
    x = 107,923,050.81/12,689.32
  6. Step 6: Final answer
    x = 8,505.03

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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.