Home / 25,678.42-38,491.21-12,514.51

Finding the Fourth Proportional to 25,678.42, 38,491.21 and 12,514.51

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Solution

The fourth proportional to 25,678.42, 38,491.21 and 12,514.51 is: 18,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,678.42 : 38,491.21 = 12,514.51 : x
  2. Step 2: Convert to fraction form
    25,678.42/38,491.21 = 12,514.51/x
  3. Step 3: Cross multiply
    25,678.42x = 38,491.21 × 12,514.51
  4. Step 4: Simplify right side
    25,678.42x = 481,698,632.46
  5. Step 5: Solve for x
    x = 481,698,632.46/25,678.42
  6. Step 6: Final answer
    x = 18,758.89

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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.