Home / 20,601.54-28,447.40-15,319.94

Finding the Fourth Proportional to 20,601.54, 28,447.40 and 15,319.94

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Solution

The fourth proportional to 20,601.54, 28,447.40 and 15,319.94 is: 21,154.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.54 : 28,447.40 = 15,319.94 : x
  2. Step 2: Convert to fraction form
    20,601.54/28,447.40 = 15,319.94/x
  3. Step 3: Cross multiply
    20,601.54x = 28,447.40 × 15,319.94
  4. Step 4: Simplify right side
    20,601.54x = 435,812,357.22
  5. Step 5: Solve for x
    x = 435,812,357.22/20,601.54
  6. Step 6: Final answer
    x = 21,154.36

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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.