Home / 15,561.72-21,475.80-8,488.44

Finding the Fourth Proportional to 15,561.72, 21,475.80 and 8,488.44

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Solution

The fourth proportional to 15,561.72, 21,475.80 and 8,488.44 is: 11,714.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.72 : 21,475.80 = 8,488.44 : x
  2. Step 2: Convert to fraction form
    15,561.72/21,475.80 = 8,488.44/x
  3. Step 3: Cross multiply
    15,561.72x = 21,475.80 × 8,488.44
  4. Step 4: Simplify right side
    15,561.72x = 182,296,039.75
  5. Step 5: Solve for x
    x = 182,296,039.75/15,561.72
  6. Step 6: Final answer
    x = 11,714.39

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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.