Home / 13,695.99-18,900.45-7,408.37

Finding the Fourth Proportional to 13,695.99, 18,900.45 and 7,408.37

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Solution

The fourth proportional to 13,695.99, 18,900.45 and 7,408.37 is: 10,223.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.99 : 18,900.45 = 7,408.37 : x
  2. Step 2: Convert to fraction form
    13,695.99/18,900.45 = 7,408.37/x
  3. Step 3: Cross multiply
    13,695.99x = 18,900.45 × 7,408.37
  4. Step 4: Simplify right side
    13,695.99x = 140,021,432.26
  5. Step 5: Solve for x
    x = 140,021,432.26/13,695.99
  6. Step 6: Final answer
    x = 10,223.53

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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.