Home / 13,939.48-19,209.93-13,683.28

Finding the Fourth Proportional to 13,939.48, 19,209.93 and 13,683.28

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Solution

The fourth proportional to 13,939.48, 19,209.93 and 13,683.28 is: 18,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.48 : 19,209.93 = 13,683.28 : x
  2. Step 2: Convert to fraction form
    13,939.48/19,209.93 = 13,683.28/x
  3. Step 3: Cross multiply
    13,939.48x = 19,209.93 × 13,683.28
  4. Step 4: Simplify right side
    13,939.48x = 262,854,754.92
  5. Step 5: Solve for x
    x = 262,854,754.92/13,939.48
  6. Step 6: Final answer
    x = 18,856.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.