Home / 13,571.15-18,728.12-7,602.87

Finding the Fourth Proportional to 13,571.15, 18,728.12 and 7,602.87

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Solution

The fourth proportional to 13,571.15, 18,728.12 and 7,602.87 is: 10,491.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.15 : 18,728.12 = 7,602.87 : x
  2. Step 2: Convert to fraction form
    13,571.15/18,728.12 = 7,602.87/x
  3. Step 3: Cross multiply
    13,571.15x = 18,728.12 × 7,602.87
  4. Step 4: Simplify right side
    13,571.15x = 142,387,410.48
  5. Step 5: Solve for x
    x = 142,387,410.48/13,571.15
  6. Step 6: Final answer
    x = 10,491.92

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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.