Home / 19,485.70-26,890.14-11,527.78

Finding the Fourth Proportional to 19,485.70, 26,890.14 and 11,527.78

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Solution

The fourth proportional to 19,485.70, 26,890.14 and 11,527.78 is: 15,908.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.70 : 26,890.14 = 11,527.78 : x
  2. Step 2: Convert to fraction form
    19,485.70/26,890.14 = 11,527.78/x
  3. Step 3: Cross multiply
    19,485.70x = 26,890.14 × 11,527.78
  4. Step 4: Simplify right side
    19,485.70x = 309,983,618.09
  5. Step 5: Solve for x
    x = 309,983,618.09/19,485.70
  6. Step 6: Final answer
    x = 15,908.26

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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.