Home / 42,648.36-63,972-19,258.44

Finding the Fourth Proportional to 42,648.36, 63,972 and 19,258.44

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Solution

The fourth proportional to 42,648.36, 63,972 and 19,258.44 is: 28,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,648.36 : 63,972 = 19,258.44 : x
  2. Step 2: Convert to fraction form
    42,648.36/63,972 = 19,258.44/x
  3. Step 3: Cross multiply
    42,648.36x = 63,972 × 19,258.44
  4. Step 4: Simplify right side
    42,648.36x = 1,232,000,923.68
  5. Step 5: Solve for x
    x = 1,232,000,923.68/42,648.36
  6. Step 6: Final answer
    x = 28,887.42

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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.