Home / 19,681.86-27,160.97-10,729.39

Finding the Fourth Proportional to 19,681.86, 27,160.97 and 10,729.39

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Solution

The fourth proportional to 19,681.86, 27,160.97 and 10,729.39 is: 14,806.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.86 : 27,160.97 = 10,729.39 : x
  2. Step 2: Convert to fraction form
    19,681.86/27,160.97 = 10,729.39/x
  3. Step 3: Cross multiply
    19,681.86x = 27,160.97 × 10,729.39
  4. Step 4: Simplify right side
    19,681.86x = 291,420,639.91
  5. Step 5: Solve for x
    x = 291,420,639.91/19,681.86
  6. Step 6: Final answer
    x = 14,806.56

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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.