Home / 21,835.20-32,752.80-20,145.60

Finding the Fourth Proportional to 21,835.20, 32,752.80 and 20,145.60

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Solution

The fourth proportional to 21,835.20, 32,752.80 and 20,145.60 is: 30,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.20 : 32,752.80 = 20,145.60 : x
  2. Step 2: Convert to fraction form
    21,835.20/32,752.80 = 20,145.60/x
  3. Step 3: Cross multiply
    21,835.20x = 32,752.80 × 20,145.60
  4. Step 4: Simplify right side
    21,835.20x = 659,824,807.68
  5. Step 5: Solve for x
    x = 659,824,807.68/21,835.20
  6. Step 6: Final answer
    x = 30,218.40

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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.