Home / 30,469.08-45,656.40-21,127.32

Finding the Fourth Proportional to 30,469.08, 45,656.40 and 21,127.32

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Solution

The fourth proportional to 30,469.08, 45,656.40 and 21,127.32 is: 31,658.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,469.08 : 45,656.40 = 21,127.32 : x
  2. Step 2: Convert to fraction form
    30,469.08/45,656.40 = 21,127.32/x
  3. Step 3: Cross multiply
    30,469.08x = 45,656.40 × 21,127.32
  4. Step 4: Simplify right side
    30,469.08x = 964,597,372.85
  5. Step 5: Solve for x
    x = 964,597,372.85/30,469.08
  6. Step 6: Final answer
    x = 31,658.24

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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.