Home / 15,615.64-21,541.96-10,639

Finding the Fourth Proportional to 15,615.64, 21,541.96 and 10,639

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Solution

The fourth proportional to 15,615.64, 21,541.96 and 10,639 is: 14,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.64 : 21,541.96 = 10,639 : x
  2. Step 2: Convert to fraction form
    15,615.64/21,541.96 = 10,639/x
  3. Step 3: Cross multiply
    15,615.64x = 21,541.96 × 10,639
  4. Step 4: Simplify right side
    15,615.64x = 229,184,912.44
  5. Step 5: Solve for x
    x = 229,184,912.44/15,615.64
  6. Step 6: Final answer
    x = 14,676.63

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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.