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Finding the Fourth Proportional to 19,224.10, 28,645.05 and 17,128

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Solution

The fourth proportional to 19,224.10, 28,645.05 and 17,128 is: 25,521.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,224.10 : 28,645.05 = 17,128 : x
  2. Step 2: Convert to fraction form
    19,224.10/28,645.05 = 17,128/x
  3. Step 3: Cross multiply
    19,224.10x = 28,645.05 × 17,128
  4. Step 4: Simplify right side
    19,224.10x = 490,632,416.40
  5. Step 5: Solve for x
    x = 490,632,416.40/19,224.10
  6. Step 6: Final answer
    x = 25,521.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.