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Finding the Fourth Proportional to 13,903.13, 20,854.53 and 5,582.99

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Solution

The fourth proportional to 13,903.13, 20,854.53 and 5,582.99 is: 8,374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.13 : 20,854.53 = 5,582.99 : x
  2. Step 2: Convert to fraction form
    13,903.13/20,854.53 = 5,582.99/x
  3. Step 3: Cross multiply
    13,903.13x = 20,854.53 × 5,582.99
  4. Step 4: Simplify right side
    13,903.13x = 116,430,684.58
  5. Step 5: Solve for x
    x = 116,430,684.58/13,903.13
  6. Step 6: Final answer
    x = 8,374.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.