Home / 20,953.72-28,922.26-12,461.82

Finding the Fourth Proportional to 20,953.72, 28,922.26 and 12,461.82

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Solution

The fourth proportional to 20,953.72, 28,922.26 and 12,461.82 is: 17,200.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.72 : 28,922.26 = 12,461.82 : x
  2. Step 2: Convert to fraction form
    20,953.72/28,922.26 = 12,461.82/x
  3. Step 3: Cross multiply
    20,953.72x = 28,922.26 × 12,461.82
  4. Step 4: Simplify right side
    20,953.72x = 360,423,998.11
  5. Step 5: Solve for x
    x = 360,423,998.11/20,953.72
  6. Step 6: Final answer
    x = 17,200.96

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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.