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Finding the Fourth Proportional to 19,008.40, 28,512.45 and 4,968.40

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Solution

The fourth proportional to 19,008.40, 28,512.45 and 4,968.40 is: 7,452.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.40 : 28,512.45 = 4,968.40 : x
  2. Step 2: Convert to fraction form
    19,008.40/28,512.45 = 4,968.40/x
  3. Step 3: Cross multiply
    19,008.40x = 28,512.45 × 4,968.40
  4. Step 4: Simplify right side
    19,008.40x = 141,661,256.58
  5. Step 5: Solve for x
    x = 141,661,256.58/19,008.40
  6. Step 6: Final answer
    x = 7,452.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.