Home / 15,913.68-23,823-13,127.28

Finding the Fourth Proportional to 15,913.68, 23,823 and 13,127.28

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Solution

The fourth proportional to 15,913.68, 23,823 and 13,127.28 is: 19,651.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.68 : 23,823 = 13,127.28 : x
  2. Step 2: Convert to fraction form
    15,913.68/23,823 = 13,127.28/x
  3. Step 3: Cross multiply
    15,913.68x = 23,823 × 13,127.28
  4. Step 4: Simplify right side
    15,913.68x = 312,731,191.44
  5. Step 5: Solve for x
    x = 312,731,191.44/15,913.68
  6. Step 6: Final answer
    x = 19,651.72

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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.