Home / 16,020.59-21,947.84-15,421.61

Finding the Fourth Proportional to 16,020.59, 21,947.84 and 15,421.61

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Solution

The fourth proportional to 16,020.59, 21,947.84 and 15,421.61 is: 21,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,020.59 : 21,947.84 = 15,421.61 : x
  2. Step 2: Convert to fraction form
    16,020.59/21,947.84 = 15,421.61/x
  3. Step 3: Cross multiply
    16,020.59x = 21,947.84 × 15,421.61
  4. Step 4: Simplify right side
    16,020.59x = 338,470,841.98
  5. Step 5: Solve for x
    x = 338,470,841.98/16,020.59
  6. Step 6: Final answer
    x = 21,127.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.