Home / 12,935.71-17,853.21-7,902.84

Finding the Fourth Proportional to 12,935.71, 17,853.21 and 7,902.84

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Solution

The fourth proportional to 12,935.71, 17,853.21 and 7,902.84 is: 10,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,935.71 : 17,853.21 = 7,902.84 : x
  2. Step 2: Convert to fraction form
    12,935.71/17,853.21 = 7,902.84/x
  3. Step 3: Cross multiply
    12,935.71x = 17,853.21 × 7,902.84
  4. Step 4: Simplify right side
    12,935.71x = 141,091,037.24
  5. Step 5: Solve for x
    x = 141,091,037.24/12,935.71
  6. Step 6: Final answer
    x = 10,907.10

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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.