Home / 21,571.28-29,763.84-14,018.72

Finding the Fourth Proportional to 21,571.28, 29,763.84 and 14,018.72

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Solution

The fourth proportional to 21,571.28, 29,763.84 and 14,018.72 is: 19,342.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.28 : 29,763.84 = 14,018.72 : x
  2. Step 2: Convert to fraction form
    21,571.28/29,763.84 = 14,018.72/x
  3. Step 3: Cross multiply
    21,571.28x = 29,763.84 × 14,018.72
  4. Step 4: Simplify right side
    21,571.28x = 417,250,939.08
  5. Step 5: Solve for x
    x = 417,250,939.08/21,571.28
  6. Step 6: Final answer
    x = 19,342.89

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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.