Home / 13,487.77-18,612.55-7,519.56

Finding the Fourth Proportional to 13,487.77, 18,612.55 and 7,519.56

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Solution

The fourth proportional to 13,487.77, 18,612.55 and 7,519.56 is: 10,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.77 : 18,612.55 = 7,519.56 : x
  2. Step 2: Convert to fraction form
    13,487.77/18,612.55 = 7,519.56/x
  3. Step 3: Cross multiply
    13,487.77x = 18,612.55 × 7,519.56
  4. Step 4: Simplify right side
    13,487.77x = 139,958,186.48
  5. Step 5: Solve for x
    x = 139,958,186.48/13,487.77
  6. Step 6: Final answer
    x = 10,376.67

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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.