Home / 13,205.34-18,223.47-7,237.53

Finding the Fourth Proportional to 13,205.34, 18,223.47 and 7,237.53

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Solution

The fourth proportional to 13,205.34, 18,223.47 and 7,237.53 is: 9,987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.34 : 18,223.47 = 7,237.53 : x
  2. Step 2: Convert to fraction form
    13,205.34/18,223.47 = 7,237.53/x
  3. Step 3: Cross multiply
    13,205.34x = 18,223.47 × 7,237.53
  4. Step 4: Simplify right side
    13,205.34x = 131,892,910.83
  5. Step 5: Solve for x
    x = 131,892,910.83/13,205.34
  6. Step 6: Final answer
    x = 9,987.85

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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.