Home / 21,920.67-32,889.65-8,070.75

Finding the Fourth Proportional to 21,920.67, 32,889.65 and 8,070.75

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Solution

The fourth proportional to 21,920.67, 32,889.65 and 8,070.75 is: 12,109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.67 : 32,889.65 = 8,070.75 : x
  2. Step 2: Convert to fraction form
    21,920.67/32,889.65 = 8,070.75/x
  3. Step 3: Cross multiply
    21,920.67x = 32,889.65 × 8,070.75
  4. Step 4: Simplify right side
    21,920.67x = 265,444,102.38
  5. Step 5: Solve for x
    x = 265,444,102.38/21,920.67
  6. Step 6: Final answer
    x = 12,109.31

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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.