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Finding the Fourth Proportional to 19,157.88, 28,740.48 and 7,470.39

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Solution

The fourth proportional to 19,157.88, 28,740.48 and 7,470.39 is: 11,207.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.88 : 28,740.48 = 7,470.39 : x
  2. Step 2: Convert to fraction form
    19,157.88/28,740.48 = 7,470.39/x
  3. Step 3: Cross multiply
    19,157.88x = 28,740.48 × 7,470.39
  4. Step 4: Simplify right side
    19,157.88x = 214,702,594.39
  5. Step 5: Solve for x
    x = 214,702,594.39/19,157.88
  6. Step 6: Final answer
    x = 11,207.01

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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.