Home / 13,552.79-18,710.19-12,485.61

Finding the Fourth Proportional to 13,552.79, 18,710.19 and 12,485.61

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Solution

The fourth proportional to 13,552.79, 18,710.19 and 12,485.61 is: 17,236.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,552.79 : 18,710.19 = 12,485.61 : x
  2. Step 2: Convert to fraction form
    13,552.79/18,710.19 = 12,485.61/x
  3. Step 3: Cross multiply
    13,552.79x = 18,710.19 × 12,485.61
  4. Step 4: Simplify right side
    13,552.79x = 233,608,135.37
  5. Step 5: Solve for x
    x = 233,608,135.37/13,552.79
  6. Step 6: Final answer
    x = 17,236.91

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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.