Home / 19,721.52-27,215.20-10,769.28

Finding the Fourth Proportional to 19,721.52, 27,215.20 and 10,769.28

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Solution

The fourth proportional to 19,721.52, 27,215.20 and 10,769.28 is: 14,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.52 : 27,215.20 = 10,769.28 : x
  2. Step 2: Convert to fraction form
    19,721.52/27,215.20 = 10,769.28/x
  3. Step 3: Cross multiply
    19,721.52x = 27,215.20 × 10,769.28
  4. Step 4: Simplify right side
    19,721.52x = 293,088,109.06
  5. Step 5: Solve for x
    x = 293,088,109.06/19,721.52
  6. Step 6: Final answer
    x = 14,861.33

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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.