Home / 20,705.92-28,574.28-11,274.56

Finding the Fourth Proportional to 20,705.92, 28,574.28 and 11,274.56

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Solution

The fourth proportional to 20,705.92, 28,574.28 and 11,274.56 is: 15,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.92 : 28,574.28 = 11,274.56 : x
  2. Step 2: Convert to fraction form
    20,705.92/28,574.28 = 11,274.56/x
  3. Step 3: Cross multiply
    20,705.92x = 28,574.28 × 11,274.56
  4. Step 4: Simplify right side
    20,705.92x = 322,162,434.32
  5. Step 5: Solve for x
    x = 322,162,434.32/20,705.92
  6. Step 6: Final answer
    x = 15,558.95

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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.