Home / 13,935.66-20,979.52-12,710.94

Finding the Fourth Proportional to 13,935.66, 20,979.52 and 12,710.94

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Solution

The fourth proportional to 13,935.66, 20,979.52 and 12,710.94 is: 19,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.66 : 20,979.52 = 12,710.94 : x
  2. Step 2: Convert to fraction form
    13,935.66/20,979.52 = 12,710.94/x
  3. Step 3: Cross multiply
    13,935.66x = 20,979.52 × 12,710.94
  4. Step 4: Simplify right side
    13,935.66x = 266,669,419.95
  5. Step 5: Solve for x
    x = 266,669,419.95/13,935.66
  6. Step 6: Final answer
    x = 19,135.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.