Home / 12,638.28-18,950.52-3,870.84

Finding the Fourth Proportional to 12,638.28, 18,950.52 and 3,870.84

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Solution

The fourth proportional to 12,638.28, 18,950.52 and 3,870.84 is: 5,804.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.28 : 18,950.52 = 3,870.84 : x
  2. Step 2: Convert to fraction form
    12,638.28/18,950.52 = 3,870.84/x
  3. Step 3: Cross multiply
    12,638.28x = 18,950.52 × 3,870.84
  4. Step 4: Simplify right side
    12,638.28x = 73,354,430.84
  5. Step 5: Solve for x
    x = 73,354,430.84/12,638.28
  6. Step 6: Final answer
    x = 5,804.15

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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.