Home / 10,721.29-14,790.44-6,945.71

Finding the Fourth Proportional to 10,721.29, 14,790.44 and 6,945.71

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Solution

The fourth proportional to 10,721.29, 14,790.44 and 6,945.71 is: 9,581.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.29 : 14,790.44 = 6,945.71 : x
  2. Step 2: Convert to fraction form
    10,721.29/14,790.44 = 6,945.71/x
  3. Step 3: Cross multiply
    10,721.29x = 14,790.44 × 6,945.71
  4. Step 4: Simplify right side
    10,721.29x = 102,730,107.01
  5. Step 5: Solve for x
    x = 102,730,107.01/10,721.29
  6. Step 6: Final answer
    x = 9,581.88

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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.