Home / 10,127.72-15,190.98-3,890.72

Finding the Fourth Proportional to 10,127.72, 15,190.98 and 3,890.72

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Solution

The fourth proportional to 10,127.72, 15,190.98 and 3,890.72 is: 5,835.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.72 : 15,190.98 = 3,890.72 : x
  2. Step 2: Convert to fraction form
    10,127.72/15,190.98 = 3,890.72/x
  3. Step 3: Cross multiply
    10,127.72x = 15,190.98 × 3,890.72
  4. Step 4: Simplify right side
    10,127.72x = 59,103,849.71
  5. Step 5: Solve for x
    x = 59,103,849.71/10,127.72
  6. Step 6: Final answer
    x = 5,835.85

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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.