Home / 30,518.24-45,764.88-20,660.24

Finding the Fourth Proportional to 30,518.24, 45,764.88 and 20,660.24

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Solution

The fourth proportional to 30,518.24, 45,764.88 and 20,660.24 is: 30,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,518.24 : 45,764.88 = 20,660.24 : x
  2. Step 2: Convert to fraction form
    30,518.24/45,764.88 = 20,660.24/x
  3. Step 3: Cross multiply
    30,518.24x = 45,764.88 × 20,660.24
  4. Step 4: Simplify right side
    30,518.24x = 945,513,404.37
  5. Step 5: Solve for x
    x = 945,513,404.37/30,518.24
  6. Step 6: Final answer
    x = 30,981.91

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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.