Home / 13,486.74-18,612.33-7,518.45

Finding the Fourth Proportional to 13,486.74, 18,612.33 and 7,518.45

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Solution

The fourth proportional to 13,486.74, 18,612.33 and 7,518.45 is: 10,375.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.74 : 18,612.33 = 7,518.45 : x
  2. Step 2: Convert to fraction form
    13,486.74/18,612.33 = 7,518.45/x
  3. Step 3: Cross multiply
    13,486.74x = 18,612.33 × 7,518.45
  4. Step 4: Simplify right side
    13,486.74x = 139,935,872.49
  5. Step 5: Solve for x
    x = 139,935,872.49/13,486.74
  6. Step 6: Final answer
    x = 10,375.81

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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.