Home / 15,511.69-21,405.67-8,797.93

Finding the Fourth Proportional to 15,511.69, 21,405.67 and 8,797.93

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Solution

The fourth proportional to 15,511.69, 21,405.67 and 8,797.93 is: 12,140.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.69 : 21,405.67 = 8,797.93 : x
  2. Step 2: Convert to fraction form
    15,511.69/21,405.67 = 8,797.93/x
  3. Step 3: Cross multiply
    15,511.69x = 21,405.67 × 8,797.93
  4. Step 4: Simplify right side
    15,511.69x = 188,325,586.26
  5. Step 5: Solve for x
    x = 188,325,586.26/15,511.69
  6. Step 6: Final answer
    x = 12,140.88

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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.