Home / 20,880.40-28,826.06-14,201.68

Finding the Fourth Proportional to 20,880.40, 28,826.06 and 14,201.68

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Solution

The fourth proportional to 20,880.40, 28,826.06 and 14,201.68 is: 19,605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.40 : 28,826.06 = 14,201.68 : x
  2. Step 2: Convert to fraction form
    20,880.40/28,826.06 = 14,201.68/x
  3. Step 3: Cross multiply
    20,880.40x = 28,826.06 × 14,201.68
  4. Step 4: Simplify right side
    20,880.40x = 409,378,479.78
  5. Step 5: Solve for x
    x = 409,378,479.78/20,880.40
  6. Step 6: Final answer
    x = 19,605.87

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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.