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Finding the Fourth Proportional to 20,281.59, 30,372.71 and 16,749.99

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Solution

The fourth proportional to 20,281.59, 30,372.71 and 16,749.99 is: 25,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.59 : 30,372.71 = 16,749.99 : x
  2. Step 2: Convert to fraction form
    20,281.59/30,372.71 = 16,749.99/x
  3. Step 3: Cross multiply
    20,281.59x = 30,372.71 × 16,749.99
  4. Step 4: Simplify right side
    20,281.59x = 508,742,505.02
  5. Step 5: Solve for x
    x = 508,742,505.02/20,281.59
  6. Step 6: Final answer
    x = 25,083.96

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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.