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Finding the Fourth Proportional to 15,980.55, 22,052.16 and 8,810.09

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Solution

The fourth proportional to 15,980.55, 22,052.16 and 8,810.09 is: 12,157.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.55 : 22,052.16 = 8,810.09 : x
  2. Step 2: Convert to fraction form
    15,980.55/22,052.16 = 8,810.09/x
  3. Step 3: Cross multiply
    15,980.55x = 22,052.16 × 8,810.09
  4. Step 4: Simplify right side
    15,980.55x = 194,281,514.29
  5. Step 5: Solve for x
    x = 194,281,514.29/15,980.55
  6. Step 6: Final answer
    x = 12,157.37

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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.