Home / 20,390.17-30,581.80-5,595.64

Finding the Fourth Proportional to 20,390.17, 30,581.80 and 5,595.64

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Solution

The fourth proportional to 20,390.17, 30,581.80 and 5,595.64 is: 8,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.17 : 30,581.80 = 5,595.64 : x
  2. Step 2: Convert to fraction form
    20,390.17/30,581.80 = 5,595.64/x
  3. Step 3: Cross multiply
    20,390.17x = 30,581.80 × 5,595.64
  4. Step 4: Simplify right side
    20,390.17x = 171,124,743.35
  5. Step 5: Solve for x
    x = 171,124,743.35/20,390.17
  6. Step 6: Final answer
    x = 8,392.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.