Home / 19,982.87-27,580.39-11,490.93

Finding the Fourth Proportional to 19,982.87, 27,580.39 and 11,490.93

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Solution

The fourth proportional to 19,982.87, 27,580.39 and 11,490.93 is: 15,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.87 : 27,580.39 = 11,490.93 : x
  2. Step 2: Convert to fraction form
    19,982.87/27,580.39 = 11,490.93/x
  3. Step 3: Cross multiply
    19,982.87x = 27,580.39 × 11,490.93
  4. Step 4: Simplify right side
    19,982.87x = 316,924,330.86
  5. Step 5: Solve for x
    x = 316,924,330.86/19,982.87
  6. Step 6: Final answer
    x = 15,859.80

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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.