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Finding the Fourth Proportional to 19,002.40, 28,398.40 and 14,014.92

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Solution

The fourth proportional to 19,002.40, 28,398.40 and 14,014.92 is: 20,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,002.40 : 28,398.40 = 14,014.92 : x
  2. Step 2: Convert to fraction form
    19,002.40/28,398.40 = 14,014.92/x
  3. Step 3: Cross multiply
    19,002.40x = 28,398.40 × 14,014.92
  4. Step 4: Simplify right side
    19,002.40x = 398,001,375.58
  5. Step 5: Solve for x
    x = 398,001,375.58/19,002.40
  6. Step 6: Final answer
    x = 20,944.80

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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.