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Finding the Fourth Proportional to 17,779.74, 26,644.20 and 13,062.78

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Solution

The fourth proportional to 17,779.74, 26,644.20 and 13,062.78 is: 19,575.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,779.74 : 26,644.20 = 13,062.78 : x
  2. Step 2: Convert to fraction form
    17,779.74/26,644.20 = 13,062.78/x
  3. Step 3: Cross multiply
    17,779.74x = 26,644.20 × 13,062.78
  4. Step 4: Simplify right side
    17,779.74x = 348,047,322.88
  5. Step 5: Solve for x
    x = 348,047,322.88/17,779.74
  6. Step 6: Final answer
    x = 19,575.50

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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.