Home / 20,810.18-28,716.57-11,856.04

Finding the Fourth Proportional to 20,810.18, 28,716.57 and 11,856.04

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Solution

The fourth proportional to 20,810.18, 28,716.57 and 11,856.04 is: 16,360.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.18 : 28,716.57 = 11,856.04 : x
  2. Step 2: Convert to fraction form
    20,810.18/28,716.57 = 11,856.04/x
  3. Step 3: Cross multiply
    20,810.18x = 28,716.57 × 11,856.04
  4. Step 4: Simplify right side
    20,810.18x = 340,464,730.79
  5. Step 5: Solve for x
    x = 340,464,730.79/20,810.18
  6. Step 6: Final answer
    x = 16,360.49

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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.