Home / 14,630.40-21,971.20-14,169.60

Finding the Fourth Proportional to 14,630.40, 21,971.20 and 14,169.60

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Solution

The fourth proportional to 14,630.40, 21,971.20 and 14,169.60 is: 21,279.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,630.40 : 21,971.20 = 14,169.60 : x
  2. Step 2: Convert to fraction form
    14,630.40/21,971.20 = 14,169.60/x
  3. Step 3: Cross multiply
    14,630.40x = 21,971.20 × 14,169.60
  4. Step 4: Simplify right side
    14,630.40x = 311,323,115.52
  5. Step 5: Solve for x
    x = 311,323,115.52/14,630.40
  6. Step 6: Final answer
    x = 21,279.19

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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.