Home / 43,178.21-64,776.04-18,218.32

Finding the Fourth Proportional to 43,178.21, 64,776.04 and 18,218.32

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Solution

The fourth proportional to 43,178.21, 64,776.04 and 18,218.32 is: 27,331.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178.21 : 64,776.04 = 18,218.32 : x
  2. Step 2: Convert to fraction form
    43,178.21/64,776.04 = 18,218.32/x
  3. Step 3: Cross multiply
    43,178.21x = 64,776.04 × 18,218.32
  4. Step 4: Simplify right side
    43,178.21x = 1,180,110,625.05
  5. Step 5: Solve for x
    x = 1,180,110,625.05/43,178.21
  6. Step 6: Final answer
    x = 27,331.16

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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.