Home / 13,124.19-19,686.28-3,890.19

Finding the Fourth Proportional to 13,124.19, 19,686.28 and 3,890.19

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Solution

The fourth proportional to 13,124.19, 19,686.28 and 3,890.19 is: 5,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.19 : 19,686.28 = 3,890.19 : x
  2. Step 2: Convert to fraction form
    13,124.19/19,686.28 = 3,890.19/x
  3. Step 3: Cross multiply
    13,124.19x = 19,686.28 × 3,890.19
  4. Step 4: Simplify right side
    13,124.19x = 76,583,369.59
  5. Step 5: Solve for x
    x = 76,583,369.59/13,124.19
  6. Step 6: Final answer
    x = 5,835.28

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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.