Home / 15,788.79-21,791.23-9,823.14

Finding the Fourth Proportional to 15,788.79, 21,791.23 and 9,823.14

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Solution

The fourth proportional to 15,788.79, 21,791.23 and 9,823.14 is: 13,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.79 : 21,791.23 = 9,823.14 : x
  2. Step 2: Convert to fraction form
    15,788.79/21,791.23 = 9,823.14/x
  3. Step 3: Cross multiply
    15,788.79x = 21,791.23 × 9,823.14
  4. Step 4: Simplify right side
    15,788.79x = 214,058,278.50
  5. Step 5: Solve for x
    x = 214,058,278.50/15,788.79
  6. Step 6: Final answer
    x = 13,557.61

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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.