Home / 20,176.60-27,813.36-15,920.32

Finding the Fourth Proportional to 20,176.60, 27,813.36 and 15,920.32

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Solution

The fourth proportional to 20,176.60, 27,813.36 and 15,920.32 is: 21,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,176.60 : 27,813.36 = 15,920.32 : x
  2. Step 2: Convert to fraction form
    20,176.60/27,813.36 = 15,920.32/x
  3. Step 3: Cross multiply
    20,176.60x = 27,813.36 × 15,920.32
  4. Step 4: Simplify right side
    20,176.60x = 442,797,591.48
  5. Step 5: Solve for x
    x = 442,797,591.48/20,176.60
  6. Step 6: Final answer
    x = 21,946.10

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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.