Home / 12,488.94-18,742.65-5,915.14

Finding the Fourth Proportional to 12,488.94, 18,742.65 and 5,915.14

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Solution

The fourth proportional to 12,488.94, 18,742.65 and 5,915.14 is: 8,877.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.94 : 18,742.65 = 5,915.14 : x
  2. Step 2: Convert to fraction form
    12,488.94/18,742.65 = 5,915.14/x
  3. Step 3: Cross multiply
    12,488.94x = 18,742.65 × 5,915.14
  4. Step 4: Simplify right side
    12,488.94x = 110,865,398.72
  5. Step 5: Solve for x
    x = 110,865,398.72/12,488.94
  6. Step 6: Final answer
    x = 8,877.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.