Home / 20,436.45-28,203.14-11,483.93

Finding the Fourth Proportional to 20,436.45, 28,203.14 and 11,483.93

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Solution

The fourth proportional to 20,436.45, 28,203.14 and 11,483.93 is: 15,848.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.45 : 28,203.14 = 11,483.93 : x
  2. Step 2: Convert to fraction form
    20,436.45/28,203.14 = 11,483.93/x
  3. Step 3: Cross multiply
    20,436.45x = 28,203.14 × 11,483.93
  4. Step 4: Simplify right side
    20,436.45x = 323,882,687.10
  5. Step 5: Solve for x
    x = 323,882,687.10/20,436.45
  6. Step 6: Final answer
    x = 15,848.29

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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.