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Finding the Fourth Proportional to 27,792.40, 38,350.80 and 15,858.40

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Solution

The fourth proportional to 27,792.40, 38,350.80 and 15,858.40 is: 21,883.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,792.40 : 38,350.80 = 15,858.40 : x
  2. Step 2: Convert to fraction form
    27,792.40/38,350.80 = 15,858.40/x
  3. Step 3: Cross multiply
    27,792.40x = 38,350.80 × 15,858.40
  4. Step 4: Simplify right side
    27,792.40x = 608,182,326.72
  5. Step 5: Solve for x
    x = 608,182,326.72/27,792.40
  6. Step 6: Final answer
    x = 21,883.04

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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.