Home / 13,486.53-18,611.42-7,518.07

Finding the Fourth Proportional to 13,486.53, 18,611.42 and 7,518.07

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Solution

The fourth proportional to 13,486.53, 18,611.42 and 7,518.07 is: 10,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.53 : 18,611.42 = 7,518.07 : x
  2. Step 2: Convert to fraction form
    13,486.53/18,611.42 = 7,518.07/x
  3. Step 3: Cross multiply
    13,486.53x = 18,611.42 × 7,518.07
  4. Step 4: Simplify right side
    13,486.53x = 139,921,881.63
  5. Step 5: Solve for x
    x = 139,921,881.63/13,486.53
  6. Step 6: Final answer
    x = 10,374.94

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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.