Home / 20,934.60-28,890.27-11,503.68

Finding the Fourth Proportional to 20,934.60, 28,890.27 and 11,503.68

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Solution

The fourth proportional to 20,934.60, 28,890.27 and 11,503.68 is: 15,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.60 : 28,890.27 = 11,503.68 : x
  2. Step 2: Convert to fraction form
    20,934.60/28,890.27 = 11,503.68/x
  3. Step 3: Cross multiply
    20,934.60x = 28,890.27 × 11,503.68
  4. Step 4: Simplify right side
    20,934.60x = 332,344,421.19
  5. Step 5: Solve for x
    x = 332,344,421.19/20,934.60
  6. Step 6: Final answer
    x = 15,875.37

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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.