Home / 20,646.48-28,491.32-11,214.80

Finding the Fourth Proportional to 20,646.48, 28,491.32 and 11,214.80

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Solution

The fourth proportional to 20,646.48, 28,491.32 and 11,214.80 is: 15,475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.48 : 28,491.32 = 11,214.80 : x
  2. Step 2: Convert to fraction form
    20,646.48/28,491.32 = 11,214.80/x
  3. Step 3: Cross multiply
    20,646.48x = 28,491.32 × 11,214.80
  4. Step 4: Simplify right side
    20,646.48x = 319,524,455.54
  5. Step 5: Solve for x
    x = 319,524,455.54/20,646.48
  6. Step 6: Final answer
    x = 15,475.98

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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.