Home / 30,390.50-45,607.35-11,922.50

Finding the Fourth Proportional to 30,390.50, 45,607.35 and 11,922.50

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Solution

The fourth proportional to 30,390.50, 45,607.35 and 11,922.50 is: 17,892.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.50 : 45,607.35 = 11,922.50 : x
  2. Step 2: Convert to fraction form
    30,390.50/45,607.35 = 11,922.50/x
  3. Step 3: Cross multiply
    30,390.50x = 45,607.35 × 11,922.50
  4. Step 4: Simplify right side
    30,390.50x = 543,753,630.38
  5. Step 5: Solve for x
    x = 543,753,630.38/30,390.50
  6. Step 6: Final answer
    x = 17,892.22

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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.