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Finding the Fourth Proportional to 15,580.21, 23,251.06 and 13,918.09

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Solution

The fourth proportional to 15,580.21, 23,251.06 and 13,918.09 is: 20,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.21 : 23,251.06 = 13,918.09 : x
  2. Step 2: Convert to fraction form
    15,580.21/23,251.06 = 13,918.09/x
  3. Step 3: Cross multiply
    15,580.21x = 23,251.06 × 13,918.09
  4. Step 4: Simplify right side
    15,580.21x = 323,610,345.68
  5. Step 5: Solve for x
    x = 323,610,345.68/15,580.21
  6. Step 6: Final answer
    x = 20,770.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.