Home / 13,350.65-18,423.18-7,381.98

Finding the Fourth Proportional to 13,350.65, 18,423.18 and 7,381.98

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Solution

The fourth proportional to 13,350.65, 18,423.18 and 7,381.98 is: 10,186.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.65 : 18,423.18 = 7,381.98 : x
  2. Step 2: Convert to fraction form
    13,350.65/18,423.18 = 7,381.98/x
  3. Step 3: Cross multiply
    13,350.65x = 18,423.18 × 7,381.98
  4. Step 4: Simplify right side
    13,350.65x = 135,999,546.30
  5. Step 5: Solve for x
    x = 135,999,546.30/13,350.65
  6. Step 6: Final answer
    x = 10,186.74

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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.