Home / 13,612.08-18,784.80-7,950.36

Finding the Fourth Proportional to 13,612.08, 18,784.80 and 7,950.36

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Solution

The fourth proportional to 13,612.08, 18,784.80 and 7,950.36 is: 10,971.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.08 : 18,784.80 = 7,950.36 : x
  2. Step 2: Convert to fraction form
    13,612.08/18,784.80 = 7,950.36/x
  3. Step 3: Cross multiply
    13,612.08x = 18,784.80 × 7,950.36
  4. Step 4: Simplify right side
    13,612.08x = 149,345,922.53
  5. Step 5: Solve for x
    x = 149,345,922.53/13,612.08
  6. Step 6: Final answer
    x = 10,971.57

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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.