Home / 18,681.84-25,787.16-12,393

Finding the Fourth Proportional to 18,681.84, 25,787.16 and 12,393

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Solution

The fourth proportional to 18,681.84, 25,787.16 and 12,393 is: 17,106.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.84 : 25,787.16 = 12,393 : x
  2. Step 2: Convert to fraction form
    18,681.84/25,787.16 = 12,393/x
  3. Step 3: Cross multiply
    18,681.84x = 25,787.16 × 12,393
  4. Step 4: Simplify right side
    18,681.84x = 319,580,273.88
  5. Step 5: Solve for x
    x = 319,580,273.88/18,681.84
  6. Step 6: Final answer
    x = 17,106.47

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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.