Home / 12,488.88-18,742.56-5,915.08

Finding the Fourth Proportional to 12,488.88, 18,742.56 and 5,915.08

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Solution

The fourth proportional to 12,488.88, 18,742.56 and 5,915.08 is: 8,877.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.88 : 18,742.56 = 5,915.08 : x
  2. Step 2: Convert to fraction form
    12,488.88/18,742.56 = 5,915.08/x
  3. Step 3: Cross multiply
    12,488.88x = 18,742.56 × 5,915.08
  4. Step 4: Simplify right side
    12,488.88x = 110,863,712.23
  5. Step 5: Solve for x
    x = 110,863,712.23/12,488.88
  6. Step 6: Final answer
    x = 8,877.00

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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.