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Finding the Fourth Proportional to 10,862.44, 14,999.36 and 6,890.60

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Solution

The fourth proportional to 10,862.44, 14,999.36 and 6,890.60 is: 9,514.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.44 : 14,999.36 = 6,890.60 : x
  2. Step 2: Convert to fraction form
    10,862.44/14,999.36 = 6,890.60/x
  3. Step 3: Cross multiply
    10,862.44x = 14,999.36 × 6,890.60
  4. Step 4: Simplify right side
    10,862.44x = 103,354,590.02
  5. Step 5: Solve for x
    x = 103,354,590.02/10,862.44
  6. Step 6: Final answer
    x = 9,514.86

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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.