Home / 20,656.40-28,506.37-11,224.96

Finding the Fourth Proportional to 20,656.40, 28,506.37 and 11,224.96

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Solution

The fourth proportional to 20,656.40, 28,506.37 and 11,224.96 is: 15,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.40 : 28,506.37 = 11,224.96 : x
  2. Step 2: Convert to fraction form
    20,656.40/28,506.37 = 11,224.96/x
  3. Step 3: Cross multiply
    20,656.40x = 28,506.37 × 11,224.96
  4. Step 4: Simplify right side
    20,656.40x = 319,982,891.06
  5. Step 5: Solve for x
    x = 319,982,891.06/20,656.40
  6. Step 6: Final answer
    x = 15,490.74

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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.