Home / 13,693.42-18,896.88-7,405.75

Finding the Fourth Proportional to 13,693.42, 18,896.88 and 7,405.75

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Solution

The fourth proportional to 13,693.42, 18,896.88 and 7,405.75 is: 10,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.42 : 18,896.88 = 7,405.75 : x
  2. Step 2: Convert to fraction form
    13,693.42/18,896.88 = 7,405.75/x
  3. Step 3: Cross multiply
    13,693.42x = 18,896.88 × 7,405.75
  4. Step 4: Simplify right side
    13,693.42x = 139,945,569.06
  5. Step 5: Solve for x
    x = 139,945,569.06/13,693.42
  6. Step 6: Final answer
    x = 10,219.91

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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.