Home / 15,763.39-21,755-11,777.58

Finding the Fourth Proportional to 15,763.39, 21,755 and 11,777.58

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Solution

The fourth proportional to 15,763.39, 21,755 and 11,777.58 is: 16,254.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.39 : 21,755 = 11,777.58 : x
  2. Step 2: Convert to fraction form
    15,763.39/21,755 = 11,777.58/x
  3. Step 3: Cross multiply
    15,763.39x = 21,755 × 11,777.58
  4. Step 4: Simplify right side
    15,763.39x = 256,221,252.90
  5. Step 5: Solve for x
    x = 256,221,252.90/15,763.39
  6. Step 6: Final answer
    x = 16,254.20

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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.