Home / 21,209.20-31,813.80-16,303.60

Finding the Fourth Proportional to 21,209.20, 31,813.80 and 16,303.60

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Solution

The fourth proportional to 21,209.20, 31,813.80 and 16,303.60 is: 24,455.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.20 : 31,813.80 = 16,303.60 : x
  2. Step 2: Convert to fraction form
    21,209.20/31,813.80 = 16,303.60/x
  3. Step 3: Cross multiply
    21,209.20x = 31,813.80 × 16,303.60
  4. Step 4: Simplify right side
    21,209.20x = 518,679,469.68
  5. Step 5: Solve for x
    x = 518,679,469.68/21,209.20
  6. Step 6: Final answer
    x = 24,455.40

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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.