Home / 13,990.41-19,302.44-7,939.67

Finding the Fourth Proportional to 13,990.41, 19,302.44 and 7,939.67

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Solution

The fourth proportional to 13,990.41, 19,302.44 and 7,939.67 is: 10,954.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.41 : 19,302.44 = 7,939.67 : x
  2. Step 2: Convert to fraction form
    13,990.41/19,302.44 = 7,939.67/x
  3. Step 3: Cross multiply
    13,990.41x = 19,302.44 × 7,939.67
  4. Step 4: Simplify right side
    13,990.41x = 153,254,867.58
  5. Step 5: Solve for x
    x = 153,254,867.58/13,990.41
  6. Step 6: Final answer
    x = 10,954.28

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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.