Home / 13,428.49-18,531.30-7,460.71

Finding the Fourth Proportional to 13,428.49, 18,531.30 and 7,460.71

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Solution

The fourth proportional to 13,428.49, 18,531.30 and 7,460.71 is: 10,295.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.49 : 18,531.30 = 7,460.71 : x
  2. Step 2: Convert to fraction form
    13,428.49/18,531.30 = 7,460.71/x
  3. Step 3: Cross multiply
    13,428.49x = 18,531.30 × 7,460.71
  4. Step 4: Simplify right side
    13,428.49x = 138,256,655.22
  5. Step 5: Solve for x
    x = 138,256,655.22/13,428.49
  6. Step 6: Final answer
    x = 10,295.77

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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.