Home / 42,878.88-64,324.54-13,299.10

Finding the Fourth Proportional to 42,878.88, 64,324.54 and 13,299.10

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Solution

The fourth proportional to 42,878.88, 64,324.54 and 13,299.10 is: 19,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,878.88 : 64,324.54 = 13,299.10 : x
  2. Step 2: Convert to fraction form
    42,878.88/64,324.54 = 13,299.10/x
  3. Step 3: Cross multiply
    42,878.88x = 64,324.54 × 13,299.10
  4. Step 4: Simplify right side
    42,878.88x = 855,458,489.91
  5. Step 5: Solve for x
    x = 855,458,489.91/42,878.88
  6. Step 6: Final answer
    x = 19,950.58

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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.