Home / 20,712.35-28,582.05-11,758.63

Finding the Fourth Proportional to 20,712.35, 28,582.05 and 11,758.63

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Solution

The fourth proportional to 20,712.35, 28,582.05 and 11,758.63 is: 16,226.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.35 : 28,582.05 = 11,758.63 : x
  2. Step 2: Convert to fraction form
    20,712.35/28,582.05 = 11,758.63/x
  3. Step 3: Cross multiply
    20,712.35x = 28,582.05 × 11,758.63
  4. Step 4: Simplify right side
    20,712.35x = 336,085,750.59
  5. Step 5: Solve for x
    x = 336,085,750.59/20,712.35
  6. Step 6: Final answer
    x = 16,226.35

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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.