Home / 20,513.49-28,310.61-12,015.06

Finding the Fourth Proportional to 20,513.49, 28,310.61 and 12,015.06

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Solution

The fourth proportional to 20,513.49, 28,310.61 and 12,015.06 is: 16,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.49 : 28,310.61 = 12,015.06 : x
  2. Step 2: Convert to fraction form
    20,513.49/28,310.61 = 12,015.06/x
  3. Step 3: Cross multiply
    20,513.49x = 28,310.61 × 12,015.06
  4. Step 4: Simplify right side
    20,513.49x = 340,153,677.79
  5. Step 5: Solve for x
    x = 340,153,677.79/20,513.49
  6. Step 6: Final answer
    x = 16,581.95

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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.