Home / 12,129.03-18,189.90-4,731.50

Finding the Fourth Proportional to 12,129.03, 18,189.90 and 4,731.50

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Solution

The fourth proportional to 12,129.03, 18,189.90 and 4,731.50 is: 7,095.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.03 : 18,189.90 = 4,731.50 : x
  2. Step 2: Convert to fraction form
    12,129.03/18,189.90 = 4,731.50/x
  3. Step 3: Cross multiply
    12,129.03x = 18,189.90 × 4,731.50
  4. Step 4: Simplify right side
    12,129.03x = 86,065,557.32
  5. Step 5: Solve for x
    x = 86,065,557.32/12,129.03
  6. Step 6: Final answer
    x = 7,095.83

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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.