Home / 20,556.64-28,368.23-11,125.20

Finding the Fourth Proportional to 20,556.64, 28,368.23 and 11,125.20

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Solution

The fourth proportional to 20,556.64, 28,368.23 and 11,125.20 is: 15,352.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.64 : 28,368.23 = 11,125.20 : x
  2. Step 2: Convert to fraction form
    20,556.64/28,368.23 = 11,125.20/x
  3. Step 3: Cross multiply
    20,556.64x = 28,368.23 × 11,125.20
  4. Step 4: Simplify right side
    20,556.64x = 315,602,123.58
  5. Step 5: Solve for x
    x = 315,602,123.58/20,556.64
  6. Step 6: Final answer
    x = 15,352.81

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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.