Home / 15,876.73-21,892.83-13,386.28

Finding the Fourth Proportional to 15,876.73, 21,892.83 and 13,386.28

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Solution

The fourth proportional to 15,876.73, 21,892.83 and 13,386.28 is: 18,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.73 : 21,892.83 = 13,386.28 : x
  2. Step 2: Convert to fraction form
    15,876.73/21,892.83 = 13,386.28/x
  3. Step 3: Cross multiply
    15,876.73x = 21,892.83 × 13,386.28
  4. Step 4: Simplify right side
    15,876.73x = 293,063,552.37
  5. Step 5: Solve for x
    x = 293,063,552.37/15,876.73
  6. Step 6: Final answer
    x = 18,458.68

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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.