Home / 42,907.68-64,372.44-13,329.72

Finding the Fourth Proportional to 42,907.68, 64,372.44 and 13,329.72

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Solution

The fourth proportional to 42,907.68, 64,372.44 and 13,329.72 is: 19,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,907.68 : 64,372.44 = 13,329.72 : x
  2. Step 2: Convert to fraction form
    42,907.68/64,372.44 = 13,329.72/x
  3. Step 3: Cross multiply
    42,907.68x = 64,372.44 × 13,329.72
  4. Step 4: Simplify right side
    42,907.68x = 858,066,600.92
  5. Step 5: Solve for x
    x = 858,066,600.92/42,907.68
  6. Step 6: Final answer
    x = 19,997.97

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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.