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Finding the Fourth Proportional to 19,242, 28,714.10 and 17,168.40

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Solution

The fourth proportional to 19,242, 28,714.10 and 17,168.40 is: 25,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,242 : 28,714.10 = 17,168.40 : x
  2. Step 2: Convert to fraction form
    19,242/28,714.10 = 17,168.40/x
  3. Step 3: Cross multiply
    19,242x = 28,714.10 × 17,168.40
  4. Step 4: Simplify right side
    19,242x = 492,975,154.44
  5. Step 5: Solve for x
    x = 492,975,154.44/19,242
  6. Step 6: Final answer
    x = 25,619.75

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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.