Home / 13,693.75-18,897.33-7,406.11

Finding the Fourth Proportional to 13,693.75, 18,897.33 and 7,406.11

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Solution

The fourth proportional to 13,693.75, 18,897.33 and 7,406.11 is: 10,220.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.75 : 18,897.33 = 7,406.11 : x
  2. Step 2: Convert to fraction form
    13,693.75/18,897.33 = 7,406.11/x
  3. Step 3: Cross multiply
    13,693.75x = 18,897.33 × 7,406.11
  4. Step 4: Simplify right side
    13,693.75x = 139,955,704.69
  5. Step 5: Solve for x
    x = 139,955,704.69/13,693.75
  6. Step 6: Final answer
    x = 10,220.41

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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.