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Finding the Fourth Proportional to 12,157.50, 16,779.78 and 6,852.41

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Solution

The fourth proportional to 12,157.50, 16,779.78 and 6,852.41 is: 9,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.50 : 16,779.78 = 6,852.41 : x
  2. Step 2: Convert to fraction form
    12,157.50/16,779.78 = 6,852.41/x
  3. Step 3: Cross multiply
    12,157.50x = 16,779.78 × 6,852.41
  4. Step 4: Simplify right side
    12,157.50x = 114,981,932.27
  5. Step 5: Solve for x
    x = 114,981,932.27/12,157.50
  6. Step 6: Final answer
    x = 9,457.70

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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.