Home / 20,556.59-28,368.16-11,125.15

Finding the Fourth Proportional to 20,556.59, 28,368.16 and 11,125.15

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Solution

The fourth proportional to 20,556.59, 28,368.16 and 11,125.15 is: 15,352.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.59 : 28,368.16 = 11,125.15 : x
  2. Step 2: Convert to fraction form
    20,556.59/28,368.16 = 11,125.15/x
  3. Step 3: Cross multiply
    20,556.59x = 28,368.16 × 11,125.15
  4. Step 4: Simplify right side
    20,556.59x = 315,599,837.76
  5. Step 5: Solve for x
    x = 315,599,837.76/20,556.59
  6. Step 6: Final answer
    x = 15,352.74

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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.