Home / 12,641.06-18,865.47-11,239.85

Finding the Fourth Proportional to 12,641.06, 18,865.47 and 11,239.85

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Solution

The fourth proportional to 12,641.06, 18,865.47 and 11,239.85 is: 16,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.06 : 18,865.47 = 11,239.85 : x
  2. Step 2: Convert to fraction form
    12,641.06/18,865.47 = 11,239.85/x
  3. Step 3: Cross multiply
    12,641.06x = 18,865.47 × 11,239.85
  4. Step 4: Simplify right side
    12,641.06x = 212,045,036.17
  5. Step 5: Solve for x
    x = 212,045,036.17/12,641.06
  6. Step 6: Final answer
    x = 16,774.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.