Home / 28,415.34-39,213.44-15,668.98

Finding the Fourth Proportional to 28,415.34, 39,213.44 and 15,668.98

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Solution

The fourth proportional to 28,415.34, 39,213.44 and 15,668.98 is: 21,623.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.34 : 39,213.44 = 15,668.98 : x
  2. Step 2: Convert to fraction form
    28,415.34/39,213.44 = 15,668.98/x
  3. Step 3: Cross multiply
    28,415.34x = 39,213.44 × 15,668.98
  4. Step 4: Simplify right side
    28,415.34x = 614,434,607.09
  5. Step 5: Solve for x
    x = 614,434,607.09/28,415.34
  6. Step 6: Final answer
    x = 21,623.34

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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.