Home / 21,769.68-30,042.70-12,338.84

Finding the Fourth Proportional to 21,769.68, 30,042.70 and 12,338.84

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Solution

The fourth proportional to 21,769.68, 30,042.70 and 12,338.84 is: 17,027.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.68 : 30,042.70 = 12,338.84 : x
  2. Step 2: Convert to fraction form
    21,769.68/30,042.70 = 12,338.84/x
  3. Step 3: Cross multiply
    21,769.68x = 30,042.70 × 12,338.84
  4. Step 4: Simplify right side
    21,769.68x = 370,692,068.47
  5. Step 5: Solve for x
    x = 370,692,068.47/21,769.68
  6. Step 6: Final answer
    x = 17,027.91

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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.