Home / 13,350.03-18,423.05-7,381.70

Finding the Fourth Proportional to 13,350.03, 18,423.05 and 7,381.70

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Solution

The fourth proportional to 13,350.03, 18,423.05 and 7,381.70 is: 10,186.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.03 : 18,423.05 = 7,381.70 : x
  2. Step 2: Convert to fraction form
    13,350.03/18,423.05 = 7,381.70/x
  3. Step 3: Cross multiply
    13,350.03x = 18,423.05 × 7,381.70
  4. Step 4: Simplify right side
    13,350.03x = 135,993,299.16
  5. Step 5: Solve for x
    x = 135,993,299.16/13,350.03
  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.