Home / 14,515.89-21,771.10-5,631.20

Finding the Fourth Proportional to 14,515.89, 21,771.10 and 5,631.20

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Solution

The fourth proportional to 14,515.89, 21,771.10 and 5,631.20 is: 8,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.89 : 21,771.10 = 5,631.20 : x
  2. Step 2: Convert to fraction form
    14,515.89/21,771.10 = 5,631.20/x
  3. Step 3: Cross multiply
    14,515.89x = 21,771.10 × 5,631.20
  4. Step 4: Simplify right side
    14,515.89x = 122,597,390.16
  5. Step 5: Solve for x
    x = 122,597,390.16/14,515.89
  6. Step 6: Final answer
    x = 8,445.74

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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.