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Finding the Fourth Proportional to 27,889.41, 38,473.88 and 18,465.87

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Solution

The fourth proportional to 27,889.41, 38,473.88 and 18,465.87 is: 25,473.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,889.41 : 38,473.88 = 18,465.87 : x
  2. Step 2: Convert to fraction form
    27,889.41/38,473.88 = 18,465.87/x
  3. Step 3: Cross multiply
    27,889.41x = 38,473.88 × 18,465.87
  4. Step 4: Simplify right side
    27,889.41x = 710,453,574.15
  5. Step 5: Solve for x
    x = 710,453,574.15/27,889.41
  6. Step 6: Final answer
    x = 25,473.95

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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.