Home / 20,313.90-28,045.29-12,766.62

Finding the Fourth Proportional to 20,313.90, 28,045.29 and 12,766.62

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Solution

The fourth proportional to 20,313.90, 28,045.29 and 12,766.62 is: 17,625.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.90 : 28,045.29 = 12,766.62 : x
  2. Step 2: Convert to fraction form
    20,313.90/28,045.29 = 12,766.62/x
  3. Step 3: Cross multiply
    20,313.90x = 28,045.29 × 12,766.62
  4. Step 4: Simplify right side
    20,313.90x = 358,043,560.22
  5. Step 5: Solve for x
    x = 358,043,560.22/20,313.90
  6. Step 6: Final answer
    x = 17,625.55

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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.