Home / 12,615.28-18,916.44-5,686

Finding the Fourth Proportional to 12,615.28, 18,916.44 and 5,686

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Solution

The fourth proportional to 12,615.28, 18,916.44 and 5,686 is: 8,526.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.28 : 18,916.44 = 5,686 : x
  2. Step 2: Convert to fraction form
    12,615.28/18,916.44 = 5,686/x
  3. Step 3: Cross multiply
    12,615.28x = 18,916.44 × 5,686
  4. Step 4: Simplify right side
    12,615.28x = 107,558,877.84
  5. Step 5: Solve for x
    x = 107,558,877.84/12,615.28
  6. Step 6: Final answer
    x = 8,526.08

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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.