Home / 12,888.45-19,335.71-4,123.44

Finding the Fourth Proportional to 12,888.45, 19,335.71 and 4,123.44

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Solution

The fourth proportional to 12,888.45, 19,335.71 and 4,123.44 is: 6,186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.45 : 19,335.71 = 4,123.44 : x
  2. Step 2: Convert to fraction form
    12,888.45/19,335.71 = 4,123.44/x
  3. Step 3: Cross multiply
    12,888.45x = 19,335.71 × 4,123.44
  4. Step 4: Simplify right side
    12,888.45x = 79,729,650.35
  5. Step 5: Solve for x
    x = 79,729,650.35/12,888.45
  6. Step 6: Final answer
    x = 6,186.13

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1.5x scale

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.