Home / 20,646.20-28,491.79-11,214.77

Finding the Fourth Proportional to 20,646.20, 28,491.79 and 11,214.77

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Solution

The fourth proportional to 20,646.20, 28,491.79 and 11,214.77 is: 15,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.20 : 28,491.79 = 11,214.77 : x
  2. Step 2: Convert to fraction form
    20,646.20/28,491.79 = 11,214.77/x
  3. Step 3: Cross multiply
    20,646.20x = 28,491.79 × 11,214.77
  4. Step 4: Simplify right side
    20,646.20x = 319,528,701.24
  5. Step 5: Solve for x
    x = 319,528,701.24/20,646.20
  6. Step 6: Final answer
    x = 15,476.39

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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.