Home / 15,779.03-21,775.08-8,705.44

Finding the Fourth Proportional to 15,779.03, 21,775.08 and 8,705.44

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Solution

The fourth proportional to 15,779.03, 21,775.08 and 8,705.44 is: 12,013.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.03 : 21,775.08 = 8,705.44 : x
  2. Step 2: Convert to fraction form
    15,779.03/21,775.08 = 8,705.44/x
  3. Step 3: Cross multiply
    15,779.03x = 21,775.08 × 8,705.44
  4. Step 4: Simplify right side
    15,779.03x = 189,561,652.44
  5. Step 5: Solve for x
    x = 189,561,652.44/15,779.03
  6. Step 6: Final answer
    x = 12,013.52

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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.