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Finding the Fourth Proportional to 14,859.95, 20,506.68 and 8,145.86

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Solution

The fourth proportional to 14,859.95, 20,506.68 and 8,145.86 is: 11,241.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.95 : 20,506.68 = 8,145.86 : x
  2. Step 2: Convert to fraction form
    14,859.95/20,506.68 = 8,145.86/x
  3. Step 3: Cross multiply
    14,859.95x = 20,506.68 × 8,145.86
  4. Step 4: Simplify right side
    14,859.95x = 167,044,441.81
  5. Step 5: Solve for x
    x = 167,044,441.81/14,859.95
  6. Step 6: Final answer
    x = 11,241.26

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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.