Home / 15,818.69-21,830.26-8,649.03

Finding the Fourth Proportional to 15,818.69, 21,830.26 and 8,649.03

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Solution

The fourth proportional to 15,818.69, 21,830.26 and 8,649.03 is: 11,935.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.69 : 21,830.26 = 8,649.03 : x
  2. Step 2: Convert to fraction form
    15,818.69/21,830.26 = 8,649.03/x
  3. Step 3: Cross multiply
    15,818.69x = 21,830.26 × 8,649.03
  4. Step 4: Simplify right side
    15,818.69x = 188,810,527.31
  5. Step 5: Solve for x
    x = 188,810,527.31/15,818.69
  6. Step 6: Final answer
    x = 11,935.91

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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.