Home / 19,201.67-28,779.87-8,659.35

Finding the Fourth Proportional to 19,201.67, 28,779.87 and 8,659.35

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Solution

The fourth proportional to 19,201.67, 28,779.87 and 8,659.35 is: 12,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.67 : 28,779.87 = 8,659.35 : x
  2. Step 2: Convert to fraction form
    19,201.67/28,779.87 = 8,659.35/x
  3. Step 3: Cross multiply
    19,201.67x = 28,779.87 × 8,659.35
  4. Step 4: Simplify right side
    19,201.67x = 249,214,967.28
  5. Step 5: Solve for x
    x = 249,214,967.28/19,201.67
  6. Step 6: Final answer
    x = 12,978.82

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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.