Home / 30,137.82-45,210.80-12,603.52

Finding the Fourth Proportional to 30,137.82, 45,210.80 and 12,603.52

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Solution

The fourth proportional to 30,137.82, 45,210.80 and 12,603.52 is: 18,906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.82 : 45,210.80 = 12,603.52 : x
  2. Step 2: Convert to fraction form
    30,137.82/45,210.80 = 12,603.52/x
  3. Step 3: Cross multiply
    30,137.82x = 45,210.80 × 12,603.52
  4. Step 4: Simplify right side
    30,137.82x = 569,815,222.02
  5. Step 5: Solve for x
    x = 569,815,222.02/30,137.82
  6. Step 6: Final answer
    x = 18,906.98

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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.