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Finding the Fourth Proportional to 28,206.99, 38,929.77 and 16,267.98

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Solution

The fourth proportional to 28,206.99, 38,929.77 and 16,267.98 is: 22,452.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.99 : 38,929.77 = 16,267.98 : x
  2. Step 2: Convert to fraction form
    28,206.99/38,929.77 = 16,267.98/x
  3. Step 3: Cross multiply
    28,206.99x = 38,929.77 × 16,267.98
  4. Step 4: Simplify right side
    28,206.99x = 633,308,719.76
  5. Step 5: Solve for x
    x = 633,308,719.76/28,206.99
  6. Step 6: Final answer
    x = 22,452.19

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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.