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Finding the Fourth Proportional to 19,130.98, 28,699.43 and 9,765.92

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Solution

The fourth proportional to 19,130.98, 28,699.43 and 9,765.92 is: 14,650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.98 : 28,699.43 = 9,765.92 : x
  2. Step 2: Convert to fraction form
    19,130.98/28,699.43 = 9,765.92/x
  3. Step 3: Cross multiply
    19,130.98x = 28,699.43 × 9,765.92
  4. Step 4: Simplify right side
    19,130.98x = 280,276,337.43
  5. Step 5: Solve for x
    x = 280,276,337.43/19,130.98
  6. Step 6: Final answer
    x = 14,650.39

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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.