Home / 42,642.20-63,962.70-19,268.60

Finding the Fourth Proportional to 42,642.20, 63,962.70 and 19,268.60

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Solution

The fourth proportional to 42,642.20, 63,962.70 and 19,268.60 is: 28,902.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,642.20 : 63,962.70 = 19,268.60 : x
  2. Step 2: Convert to fraction form
    42,642.20/63,962.70 = 19,268.60/x
  3. Step 3: Cross multiply
    42,642.20x = 63,962.70 × 19,268.60
  4. Step 4: Simplify right side
    42,642.20x = 1,232,471,681.22
  5. Step 5: Solve for x
    x = 1,232,471,681.22/42,642.20
  6. Step 6: Final answer
    x = 28,902.63

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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.