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Finding the Fourth Proportional to 27,798.59, 38,360.59 and 15,863.04

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Solution

The fourth proportional to 27,798.59, 38,360.59 and 15,863.04 is: 21,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,798.59 : 38,360.59 = 15,863.04 : x
  2. Step 2: Convert to fraction form
    27,798.59/38,360.59 = 15,863.04/x
  3. Step 3: Cross multiply
    27,798.59x = 38,360.59 × 15,863.04
  4. Step 4: Simplify right side
    27,798.59x = 608,515,533.94
  5. Step 5: Solve for x
    x = 608,515,533.94/27,798.59
  6. Step 6: Final answer
    x = 21,890.16

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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.