Home / 42,987.44-64,460.42-18,020.79

Finding the Fourth Proportional to 42,987.44, 64,460.42 and 18,020.79

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Solution

The fourth proportional to 42,987.44, 64,460.42 and 18,020.79 is: 27,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,987.44 : 64,460.42 = 18,020.79 : x
  2. Step 2: Convert to fraction form
    42,987.44/64,460.42 = 18,020.79/x
  3. Step 3: Cross multiply
    42,987.44x = 64,460.42 × 18,020.79
  4. Step 4: Simplify right side
    42,987.44x = 1,161,627,692.13
  5. Step 5: Solve for x
    x = 1,161,627,692.13/42,987.44
  6. Step 6: Final answer
    x = 27,022.49

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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.