Home / 15,841.63-21,859.53-9,129.43

Finding the Fourth Proportional to 15,841.63, 21,859.53 and 9,129.43

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Solution

The fourth proportional to 15,841.63, 21,859.53 and 9,129.43 is: 12,597.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.63 : 21,859.53 = 9,129.43 : x
  2. Step 2: Convert to fraction form
    15,841.63/21,859.53 = 9,129.43/x
  3. Step 3: Cross multiply
    15,841.63x = 21,859.53 × 9,129.43
  4. Step 4: Simplify right side
    15,841.63x = 199,565,048.97
  5. Step 5: Solve for x
    x = 199,565,048.97/15,841.63
  6. Step 6: Final answer
    x = 12,597.51

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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.