Home / 15,885.73-21,857.93-13,042.63

Finding the Fourth Proportional to 15,885.73, 21,857.93 and 13,042.63

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Solution

The fourth proportional to 15,885.73, 21,857.93 and 13,042.63 is: 17,945.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,885.73 : 21,857.93 = 13,042.63 : x
  2. Step 2: Convert to fraction form
    15,885.73/21,857.93 = 13,042.63/x
  3. Step 3: Cross multiply
    15,885.73x = 21,857.93 × 13,042.63
  4. Step 4: Simplify right side
    15,885.73x = 285,084,784.27
  5. Step 5: Solve for x
    x = 285,084,784.27/15,885.73
  6. Step 6: Final answer
    x = 17,945.97

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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.