Home / 20,290.64-28,005.76-13,204.76

Finding the Fourth Proportional to 20,290.64, 28,005.76 and 13,204.76

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Solution

The fourth proportional to 20,290.64, 28,005.76 and 13,204.76 is: 18,225.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.64 : 28,005.76 = 13,204.76 : x
  2. Step 2: Convert to fraction form
    20,290.64/28,005.76 = 13,204.76/x
  3. Step 3: Cross multiply
    20,290.64x = 28,005.76 × 13,204.76
  4. Step 4: Simplify right side
    20,290.64x = 369,809,339.42
  5. Step 5: Solve for x
    x = 369,809,339.42/20,290.64
  6. Step 6: Final answer
    x = 18,225.61

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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.