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Finding the Fourth Proportional to 14,878.40, 22,317.60 and 14,149.40

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Solution

The fourth proportional to 14,878.40, 22,317.60 and 14,149.40 is: 21,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,878.40 : 22,317.60 = 14,149.40 : x
  2. Step 2: Convert to fraction form
    14,878.40/22,317.60 = 14,149.40/x
  3. Step 3: Cross multiply
    14,878.40x = 22,317.60 × 14,149.40
  4. Step 4: Simplify right side
    14,878.40x = 315,780,649.44
  5. Step 5: Solve for x
    x = 315,780,649.44/14,878.40
  6. Step 6: Final answer
    x = 21,224.10

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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.