Home / 18,142.16-27,220.08-12,353.36

Finding the Fourth Proportional to 18,142.16, 27,220.08 and 12,353.36

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Solution

The fourth proportional to 18,142.16, 27,220.08 and 12,353.36 is: 18,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142.16 : 27,220.08 = 12,353.36 : x
  2. Step 2: Convert to fraction form
    18,142.16/27,220.08 = 12,353.36/x
  3. Step 3: Cross multiply
    18,142.16x = 27,220.08 × 12,353.36
  4. Step 4: Simplify right side
    18,142.16x = 336,259,447.47
  5. Step 5: Solve for x
    x = 336,259,447.47/18,142.16
  6. Step 6: Final answer
    x = 18,534.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.