Home / 42,998.64-64,495.68-13,413.08

Finding the Fourth Proportional to 42,998.64, 64,495.68 and 13,413.08

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Solution

The fourth proportional to 42,998.64, 64,495.68 and 13,413.08 is: 20,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,998.64 : 64,495.68 = 13,413.08 : x
  2. Step 2: Convert to fraction form
    42,998.64/64,495.68 = 13,413.08/x
  3. Step 3: Cross multiply
    42,998.64x = 64,495.68 × 13,413.08
  4. Step 4: Simplify right side
    42,998.64x = 865,085,648.43
  5. Step 5: Solve for x
    x = 865,085,648.43/42,998.64
  6. Step 6: Final answer
    x = 20,118.91

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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.