Home / 20,757.64-28,646.56-11,685.82

Finding the Fourth Proportional to 20,757.64, 28,646.56 and 11,685.82

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Solution

The fourth proportional to 20,757.64, 28,646.56 and 11,685.82 is: 16,127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.64 : 28,646.56 = 11,685.82 : x
  2. Step 2: Convert to fraction form
    20,757.64/28,646.56 = 11,685.82/x
  3. Step 3: Cross multiply
    20,757.64x = 28,646.56 × 11,685.82
  4. Step 4: Simplify right side
    20,757.64x = 334,758,543.78
  5. Step 5: Solve for x
    x = 334,758,543.78/20,757.64
  6. Step 6: Final answer
    x = 16,127.00

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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.