Home / 20,658.07-28,508.14-11,226.63

Finding the Fourth Proportional to 20,658.07, 28,508.14 and 11,226.63

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Solution

The fourth proportional to 20,658.07, 28,508.14 and 11,226.63 is: 15,492.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.07 : 28,508.14 = 11,226.63 : x
  2. Step 2: Convert to fraction form
    20,658.07/28,508.14 = 11,226.63/x
  3. Step 3: Cross multiply
    20,658.07x = 28,508.14 × 11,226.63
  4. Step 4: Simplify right side
    20,658.07x = 320,050,339.77
  5. Step 5: Solve for x
    x = 320,050,339.77/20,658.07
  6. Step 6: Final answer
    x = 15,492.75

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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.