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Finding the Fourth Proportional to 19,879.40, 27,465 and 18,304.76

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Solution

The fourth proportional to 19,879.40, 27,465 and 18,304.76 is: 25,289.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.40 : 27,465 = 18,304.76 : x
  2. Step 2: Convert to fraction form
    19,879.40/27,465 = 18,304.76/x
  3. Step 3: Cross multiply
    19,879.40x = 27,465 × 18,304.76
  4. Step 4: Simplify right side
    19,879.40x = 502,740,233.40
  5. Step 5: Solve for x
    x = 502,740,233.40/19,879.40
  6. Step 6: Final answer
    x = 25,289.51

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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.