Home / 15,791.90-21,818.96-12,460.06

Finding the Fourth Proportional to 15,791.90, 21,818.96 and 12,460.06

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Solution

The fourth proportional to 15,791.90, 21,818.96 and 12,460.06 is: 17,215.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.90 : 21,818.96 = 12,460.06 : x
  2. Step 2: Convert to fraction form
    15,791.90/21,818.96 = 12,460.06/x
  3. Step 3: Cross multiply
    15,791.90x = 21,818.96 × 12,460.06
  4. Step 4: Simplify right side
    15,791.90x = 271,865,550.74
  5. Step 5: Solve for x
    x = 271,865,550.74/15,791.90
  6. Step 6: Final answer
    x = 17,215.51

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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.