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Finding the Fourth Proportional to 15,919.52, 21,953.57 and 10,539.50

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Solution

The fourth proportional to 15,919.52, 21,953.57 and 10,539.50 is: 14,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.52 : 21,953.57 = 10,539.50 : x
  2. Step 2: Convert to fraction form
    15,919.52/21,953.57 = 10,539.50/x
  3. Step 3: Cross multiply
    15,919.52x = 21,953.57 × 10,539.50
  4. Step 4: Simplify right side
    15,919.52x = 231,379,488.55
  5. Step 5: Solve for x
    x = 231,379,488.55/15,919.52
  6. Step 6: Final answer
    x = 14,534.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.