Home / 21,628.34-32,442.51-8,486.90

Finding the Fourth Proportional to 21,628.34, 32,442.51 and 8,486.90

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Solution

The fourth proportional to 21,628.34, 32,442.51 and 8,486.90 is: 12,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.34 : 32,442.51 = 8,486.90 : x
  2. Step 2: Convert to fraction form
    21,628.34/32,442.51 = 8,486.90/x
  3. Step 3: Cross multiply
    21,628.34x = 32,442.51 × 8,486.90
  4. Step 4: Simplify right side
    21,628.34x = 275,336,338.12
  5. Step 5: Solve for x
    x = 275,336,338.12/21,628.34
  6. Step 6: Final answer
    x = 12,730.35

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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.