Home / 20,453.59-28,214.42-12,275.10

Finding the Fourth Proportional to 20,453.59, 28,214.42 and 12,275.10

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Solution

The fourth proportional to 20,453.59, 28,214.42 and 12,275.10 is: 16,932.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.59 : 28,214.42 = 12,275.10 : x
  2. Step 2: Convert to fraction form
    20,453.59/28,214.42 = 12,275.10/x
  3. Step 3: Cross multiply
    20,453.59x = 28,214.42 × 12,275.10
  4. Step 4: Simplify right side
    20,453.59x = 346,334,826.94
  5. Step 5: Solve for x
    x = 346,334,826.94/20,453.59
  6. Step 6: Final answer
    x = 16,932.72

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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.