Home / 20,251.40-27,935.70-11,866.28

Finding the Fourth Proportional to 20,251.40, 27,935.70 and 11,866.28

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Solution

The fourth proportional to 20,251.40, 27,935.70 and 11,866.28 is: 16,368.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.40 : 27,935.70 = 11,866.28 : x
  2. Step 2: Convert to fraction form
    20,251.40/27,935.70 = 11,866.28/x
  3. Step 3: Cross multiply
    20,251.40x = 27,935.70 × 11,866.28
  4. Step 4: Simplify right side
    20,251.40x = 331,492,838.20
  5. Step 5: Solve for x
    x = 331,492,838.20/20,251.40
  6. Step 6: Final answer
    x = 16,368.89

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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.