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Finding the Fourth Proportional to 19,884.52, 27,430.52 and 15,160.60

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Solution

The fourth proportional to 19,884.52, 27,430.52 and 15,160.60 is: 20,913.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884.52 : 27,430.52 = 15,160.60 : x
  2. Step 2: Convert to fraction form
    19,884.52/27,430.52 = 15,160.60/x
  3. Step 3: Cross multiply
    19,884.52x = 27,430.52 × 15,160.60
  4. Step 4: Simplify right side
    19,884.52x = 415,863,141.51
  5. Step 5: Solve for x
    x = 415,863,141.51/19,884.52
  6. Step 6: Final answer
    x = 20,913.91

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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.