Home / 19,764.50-27,275.40-10,812.56

Finding the Fourth Proportional to 19,764.50, 27,275.40 and 10,812.56

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Solution

The fourth proportional to 19,764.50, 27,275.40 and 10,812.56 is: 14,921.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,764.50 : 27,275.40 = 10,812.56 : x
  2. Step 2: Convert to fraction form
    19,764.50/27,275.40 = 10,812.56/x
  3. Step 3: Cross multiply
    19,764.50x = 27,275.40 × 10,812.56
  4. Step 4: Simplify right side
    19,764.50x = 294,916,762.65
  5. Step 5: Solve for x
    x = 294,916,762.65/19,764.50
  6. Step 6: Final answer
    x = 14,921.54

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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.