Home / 13,484.34-18,608.85-7,515.78

Finding the Fourth Proportional to 13,484.34, 18,608.85 and 7,515.78

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Solution

The fourth proportional to 13,484.34, 18,608.85 and 7,515.78 is: 10,372.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.34 : 18,608.85 = 7,515.78 : x
  2. Step 2: Convert to fraction form
    13,484.34/18,608.85 = 7,515.78/x
  3. Step 3: Cross multiply
    13,484.34x = 18,608.85 × 7,515.78
  4. Step 4: Simplify right side
    13,484.34x = 139,860,022.65
  5. Step 5: Solve for x
    x = 139,860,022.65/13,484.34
  6. Step 6: Final answer
    x = 10,372.03

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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.