Home / 20,021.61-27,623.75-13,971.69

Finding the Fourth Proportional to 20,021.61, 27,623.75 and 13,971.69

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Solution

The fourth proportional to 20,021.61, 27,623.75 and 13,971.69 is: 19,276.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.61 : 27,623.75 = 13,971.69 : x
  2. Step 2: Convert to fraction form
    20,021.61/27,623.75 = 13,971.69/x
  3. Step 3: Cross multiply
    20,021.61x = 27,623.75 × 13,971.69
  4. Step 4: Simplify right side
    20,021.61x = 385,950,368.45
  5. Step 5: Solve for x
    x = 385,950,368.45/20,021.61
  6. Step 6: Final answer
    x = 19,276.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.