Home / 13,989.46-19,305.39-7,615.57

Finding the Fourth Proportional to 13,989.46, 19,305.39 and 7,615.57

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Solution

The fourth proportional to 13,989.46, 19,305.39 and 7,615.57 is: 10,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.46 : 19,305.39 = 7,615.57 : x
  2. Step 2: Convert to fraction form
    13,989.46/19,305.39 = 7,615.57/x
  3. Step 3: Cross multiply
    13,989.46x = 19,305.39 × 7,615.57
  4. Step 4: Simplify right side
    13,989.46x = 147,021,548.92
  5. Step 5: Solve for x
    x = 147,021,548.92/13,989.46
  6. Step 6: Final answer
    x = 10,509.45

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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.