Home / 42,480.36-63,716.42-12,898.45

Finding the Fourth Proportional to 42,480.36, 63,716.42 and 12,898.45

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Solution

The fourth proportional to 42,480.36, 63,716.42 and 12,898.45 is: 19,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,480.36 : 63,716.42 = 12,898.45 : x
  2. Step 2: Convert to fraction form
    42,480.36/63,716.42 = 12,898.45/x
  3. Step 3: Cross multiply
    42,480.36x = 63,716.42 × 12,898.45
  4. Step 4: Simplify right side
    42,480.36x = 821,843,259.04
  5. Step 5: Solve for x
    x = 821,843,259.04/42,480.36
  6. Step 6: Final answer
    x = 19,346.43

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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.