Home / 42,087.42-63,043.64-19,918.53

Finding the Fourth Proportional to 42,087.42, 63,043.64 and 19,918.53

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Solution

The fourth proportional to 42,087.42, 63,043.64 and 19,918.53 is: 29,836.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,087.42 : 63,043.64 = 19,918.53 : x
  2. Step 2: Convert to fraction form
    42,087.42/63,043.64 = 19,918.53/x
  3. Step 3: Cross multiply
    42,087.42x = 63,043.64 × 19,918.53
  4. Step 4: Simplify right side
    42,087.42x = 1,255,736,634.65
  5. Step 5: Solve for x
    x = 1,255,736,634.65/42,087.42
  6. Step 6: Final answer
    x = 29,836.39

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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.