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Finding the Fourth Proportional to 27,356.54, 37,783.15 and 18,388.47

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Solution

The fourth proportional to 27,356.54, 37,783.15 and 18,388.47 is: 25,397.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,356.54 : 37,783.15 = 18,388.47 : x
  2. Step 2: Convert to fraction form
    27,356.54/37,783.15 = 18,388.47/x
  3. Step 3: Cross multiply
    27,356.54x = 37,783.15 × 18,388.47
  4. Step 4: Simplify right side
    27,356.54x = 694,774,132.62
  5. Step 5: Solve for x
    x = 694,774,132.62/27,356.54
  6. Step 6: Final answer
    x = 25,397.00

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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.