Home / 19,564.78-29,332.58-11,771.78

Finding the Fourth Proportional to 19,564.78, 29,332.58 and 11,771.78

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Solution

The fourth proportional to 19,564.78, 29,332.58 and 11,771.78 is: 17,648.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,564.78 : 29,332.58 = 11,771.78 : x
  2. Step 2: Convert to fraction form
    19,564.78/29,332.58 = 11,771.78/x
  3. Step 3: Cross multiply
    19,564.78x = 29,332.58 × 11,771.78
  4. Step 4: Simplify right side
    19,564.78x = 345,296,678.59
  5. Step 5: Solve for x
    x = 345,296,678.59/19,564.78
  6. Step 6: Final answer
    x = 17,648.89

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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.