Home / 13,389.44-18,476.75-7,421.06

Finding the Fourth Proportional to 13,389.44, 18,476.75 and 7,421.06

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Solution

The fourth proportional to 13,389.44, 18,476.75 and 7,421.06 is: 10,240.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.44 : 18,476.75 = 7,421.06 : x
  2. Step 2: Convert to fraction form
    13,389.44/18,476.75 = 7,421.06/x
  3. Step 3: Cross multiply
    13,389.44x = 18,476.75 × 7,421.06
  4. Step 4: Simplify right side
    13,389.44x = 137,116,940.87
  5. Step 5: Solve for x
    x = 137,116,940.87/13,389.44
  6. Step 6: Final answer
    x = 10,240.68

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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.