Home / 20,511.36-28,306.26-11,436.93

Finding the Fourth Proportional to 20,511.36, 28,306.26 and 11,436.93

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Solution

The fourth proportional to 20,511.36, 28,306.26 and 11,436.93 is: 15,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.36 : 28,306.26 = 11,436.93 : x
  2. Step 2: Convert to fraction form
    20,511.36/28,306.26 = 11,436.93/x
  3. Step 3: Cross multiply
    20,511.36x = 28,306.26 × 11,436.93
  4. Step 4: Simplify right side
    20,511.36x = 323,736,714.18
  5. Step 5: Solve for x
    x = 323,736,714.18/20,511.36
  6. Step 6: Final answer
    x = 15,783.29

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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.