Home / 31,511.94-47,267.90-21,621.23

Finding the Fourth Proportional to 31,511.94, 47,267.90 and 21,621.23

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Solution

The fourth proportional to 31,511.94, 47,267.90 and 21,621.23 is: 32,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,511.94 : 47,267.90 = 21,621.23 : x
  2. Step 2: Convert to fraction form
    31,511.94/47,267.90 = 21,621.23/x
  3. Step 3: Cross multiply
    31,511.94x = 47,267.90 × 21,621.23
  4. Step 4: Simplify right side
    31,511.94x = 1,021,990,173.03
  5. Step 5: Solve for x
    x = 1,021,990,173.03/31,511.94
  6. Step 6: Final answer
    x = 32,431.84

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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.