Home / 12,145.08-18,218.70-9,373.80

Finding the Fourth Proportional to 12,145.08, 18,218.70 and 9,373.80

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Solution

The fourth proportional to 12,145.08, 18,218.70 and 9,373.80 is: 14,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.08 : 18,218.70 = 9,373.80 : x
  2. Step 2: Convert to fraction form
    12,145.08/18,218.70 = 9,373.80/x
  3. Step 3: Cross multiply
    12,145.08x = 18,218.70 × 9,373.80
  4. Step 4: Simplify right side
    12,145.08x = 170,778,450.06
  5. Step 5: Solve for x
    x = 170,778,450.06/12,145.08
  6. Step 6: Final answer
    x = 14,061.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.