Home / 19,770.92-27,284.04-12,215.51

Finding the Fourth Proportional to 19,770.92, 27,284.04 and 12,215.51

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Solution

The fourth proportional to 19,770.92, 27,284.04 and 12,215.51 is: 16,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.92 : 27,284.04 = 12,215.51 : x
  2. Step 2: Convert to fraction form
    19,770.92/27,284.04 = 12,215.51/x
  3. Step 3: Cross multiply
    19,770.92x = 27,284.04 × 12,215.51
  4. Step 4: Simplify right side
    19,770.92x = 333,288,463.46
  5. Step 5: Solve for x
    x = 333,288,463.46/19,770.92
  6. Step 6: Final answer
    x = 16,857.51

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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.