Home / 19,412.96-29,107.68-12,663.59

Finding the Fourth Proportional to 19,412.96, 29,107.68 and 12,663.59

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Solution

The fourth proportional to 19,412.96, 29,107.68 and 12,663.59 is: 18,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,412.96 : 29,107.68 = 12,663.59 : x
  2. Step 2: Convert to fraction form
    19,412.96/29,107.68 = 12,663.59/x
  3. Step 3: Cross multiply
    19,412.96x = 29,107.68 × 12,663.59
  4. Step 4: Simplify right side
    19,412.96x = 368,607,532.34
  5. Step 5: Solve for x
    x = 368,607,532.34/19,412.96
  6. Step 6: Final answer
    x = 18,987.71

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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.