Home / 30,853.56-42,582.12-18,914.76

Finding the Fourth Proportional to 30,853.56, 42,582.12 and 18,914.76

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Solution

The fourth proportional to 30,853.56, 42,582.12 and 18,914.76 is: 26,104.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,853.56 : 42,582.12 = 18,914.76 : x
  2. Step 2: Convert to fraction form
    30,853.56/42,582.12 = 18,914.76/x
  3. Step 3: Cross multiply
    30,853.56x = 42,582.12 × 18,914.76
  4. Step 4: Simplify right side
    30,853.56x = 805,430,580.09
  5. Step 5: Solve for x
    x = 805,430,580.09/30,853.56
  6. Step 6: Final answer
    x = 26,104.95

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Double scale
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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.