Home / 13,209.16-18,211.86-9,436.84

Finding the Fourth Proportional to 13,209.16, 18,211.86 and 9,436.84

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Solution

The fourth proportional to 13,209.16, 18,211.86 and 9,436.84 is: 13,010.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.16 : 18,211.86 = 9,436.84 : x
  2. Step 2: Convert to fraction form
    13,209.16/18,211.86 = 9,436.84/x
  3. Step 3: Cross multiply
    13,209.16x = 18,211.86 × 9,436.84
  4. Step 4: Simplify right side
    13,209.16x = 171,862,408.92
  5. Step 5: Solve for x
    x = 171,862,408.92/13,209.16
  6. Step 6: Final answer
    x = 13,010.85

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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.