Home / 12,328.88-18,489.48-4,538.36

Finding the Fourth Proportional to 12,328.88, 18,489.48 and 4,538.36

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Solution

The fourth proportional to 12,328.88, 18,489.48 and 4,538.36 is: 6,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.88 : 18,489.48 = 4,538.36 : x
  2. Step 2: Convert to fraction form
    12,328.88/18,489.48 = 4,538.36/x
  3. Step 3: Cross multiply
    12,328.88x = 18,489.48 × 4,538.36
  4. Step 4: Simplify right side
    12,328.88x = 83,911,916.45
  5. Step 5: Solve for x
    x = 83,911,916.45/12,328.88
  6. Step 6: Final answer
    x = 6,806.13

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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.