Home / 20,964.24-28,943.58-14,427

Finding the Fourth Proportional to 20,964.24, 28,943.58 and 14,427

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Solution

The fourth proportional to 20,964.24, 28,943.58 and 14,427 is: 19,918.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.24 : 28,943.58 = 14,427 : x
  2. Step 2: Convert to fraction form
    20,964.24/28,943.58 = 14,427/x
  3. Step 3: Cross multiply
    20,964.24x = 28,943.58 × 14,427
  4. Step 4: Simplify right side
    20,964.24x = 417,569,028.66
  5. Step 5: Solve for x
    x = 417,569,028.66/20,964.24
  6. Step 6: Final answer
    x = 19,918.16

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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.