Home / 14,192.84-21,291-7,939.40

Finding the Fourth Proportional to 14,192.84, 21,291 and 7,939.40

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Solution

The fourth proportional to 14,192.84, 21,291 and 7,939.40 is: 11,910.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,192.84 : 21,291 = 7,939.40 : x
  2. Step 2: Convert to fraction form
    14,192.84/21,291 = 7,939.40/x
  3. Step 3: Cross multiply
    14,192.84x = 21,291 × 7,939.40
  4. Step 4: Simplify right side
    14,192.84x = 169,037,765.40
  5. Step 5: Solve for x
    x = 169,037,765.40/14,192.84
  6. Step 6: Final answer
    x = 11,910.07

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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.