Home / 14,428.78-21,630.10-5,661.34

Finding the Fourth Proportional to 14,428.78, 21,630.10 and 5,661.34

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Solution

The fourth proportional to 14,428.78, 21,630.10 and 5,661.34 is: 8,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.78 : 21,630.10 = 5,661.34 : x
  2. Step 2: Convert to fraction form
    14,428.78/21,630.10 = 5,661.34/x
  3. Step 3: Cross multiply
    14,428.78x = 21,630.10 × 5,661.34
  4. Step 4: Simplify right side
    14,428.78x = 122,455,350.33
  5. Step 5: Solve for x
    x = 122,455,350.33/14,428.78
  6. Step 6: Final answer
    x = 8,486.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.