Home / 20,656.34-28,505.75-11,224.88

Finding the Fourth Proportional to 20,656.34, 28,505.75 and 11,224.88

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Solution

The fourth proportional to 20,656.34, 28,505.75 and 11,224.88 is: 15,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.34 : 28,505.75 = 11,224.88 : x
  2. Step 2: Convert to fraction form
    20,656.34/28,505.75 = 11,224.88/x
  3. Step 3: Cross multiply
    20,656.34x = 28,505.75 × 11,224.88
  4. Step 4: Simplify right side
    20,656.34x = 319,973,424.41
  5. Step 5: Solve for x
    x = 319,973,424.41/20,656.34
  6. Step 6: Final answer
    x = 15,490.33

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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.