Home / 19,812.47-27,341.42-10,859.78

Finding the Fourth Proportional to 19,812.47, 27,341.42 and 10,859.78

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Solution

The fourth proportional to 19,812.47, 27,341.42 and 10,859.78 is: 14,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.47 : 27,341.42 = 10,859.78 : x
  2. Step 2: Convert to fraction form
    19,812.47/27,341.42 = 10,859.78/x
  3. Step 3: Cross multiply
    19,812.47x = 27,341.42 × 10,859.78
  4. Step 4: Simplify right side
    19,812.47x = 296,921,806.09
  5. Step 5: Solve for x
    x = 296,921,806.09/19,812.47
  6. Step 6: Final answer
    x = 14,986.61

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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.