Home / 12,920.64-17,835.92-8,734.56

Finding the Fourth Proportional to 12,920.64, 17,835.92 and 8,734.56

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Solution

The fourth proportional to 12,920.64, 17,835.92 and 8,734.56 is: 12,057.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.64 : 17,835.92 = 8,734.56 : x
  2. Step 2: Convert to fraction form
    12,920.64/17,835.92 = 8,734.56/x
  3. Step 3: Cross multiply
    12,920.64x = 17,835.92 × 8,734.56
  4. Step 4: Simplify right side
    12,920.64x = 155,788,913.40
  5. Step 5: Solve for x
    x = 155,788,913.40/12,920.64
  6. Step 6: Final answer
    x = 12,057.37

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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.