Home / 13,428.78-18,531.48-7,460.29

Finding the Fourth Proportional to 13,428.78, 18,531.48 and 7,460.29

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Solution

The fourth proportional to 13,428.78, 18,531.48 and 7,460.29 is: 10,295.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.78 : 18,531.48 = 7,460.29 : x
  2. Step 2: Convert to fraction form
    13,428.78/18,531.48 = 7,460.29/x
  3. Step 3: Cross multiply
    13,428.78x = 18,531.48 × 7,460.29
  4. Step 4: Simplify right side
    13,428.78x = 138,250,214.93
  5. Step 5: Solve for x
    x = 138,250,214.93/13,428.78
  6. Step 6: Final answer
    x = 10,295.07

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1.5x scale

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.