Home / 30,190.92-45,271.82-12,656.04

Finding the Fourth Proportional to 30,190.92, 45,271.82 and 12,656.04

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Solution

The fourth proportional to 30,190.92, 45,271.82 and 12,656.04 is: 18,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,190.92 : 45,271.82 = 12,656.04 : x
  2. Step 2: Convert to fraction form
    30,190.92/45,271.82 = 12,656.04/x
  3. Step 3: Cross multiply
    30,190.92x = 45,271.82 × 12,656.04
  4. Step 4: Simplify right side
    30,190.92x = 572,961,901.51
  5. Step 5: Solve for x
    x = 572,961,901.51/30,190.92
  6. Step 6: Final answer
    x = 18,977.95

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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.